how do you do quadratic equations?

24n = 120. What is n?

25c^2+10c+1

2x+5=x^2

The numbers in brackets are powers

Solve (D2-3D+2)y =x(x+4) and show that its general solution is given by y=Aex + Be2x +(x2/2) + (7x/2) + (19/4)

My work :

auxiliary eqn , m2 - 3m + 2= 0 m=1 , m=2

Reduced eqn : yn = Aex + Be2x

P.I. = 1/f(D)F(x) = (1/(D2-3D+2))(x(x+4))

P.I. = [(x2+4x) + ( (1/2)( 2- 3(2x) - 3(4) ) ) + (1/4)(92) )

P.I. = x2 + (4x/2) - (6x/4) - (5/2) + (18/4)

P.I. =(x2/2) + x + 8/4

General solution : y= Aex + Be2x + (x2/2) + x + 8/4

Could anyone point out my mistakes?

differentiate f(t)=2-(2/3)t

y= x2 (2x+1)1/2

Solve for f(x) , [f'(x)]^2 + 6f(x)[f'(x)] + [f(x)]^2 = 0

find the equation of the line below arrange your answer in the form y=mx+b where b is constant (-2,2) (2,2)

x4/3 - 102/3 +21=0

find the equation of the tangent line to (e^xy)+(x^2)-(y^2)=5 through the point (2,0)

find x = 2(3x×x)+(2x×)=14400

9x+5=7x+11

f(x)=3x^4+9e^x^6

Find the set on which the function is continuous (in all cases, the domain). Do so analytically, identify the type of function and the appropriate algebraic rule for determining domain.

Find what y will be when x=40 degrees 2) Sketch the curve for one positive and one negative cycle and then on your graph determine the x value when y is 9

dimmsdale discount golf supply sells titleist golf balls for 60c each, the nike golf balls for 94c each and the Calloway golf balls for 140.50, how many golf balls of each kind were bought?

-4=8x+y

5x+3/4x-7≥2, can anyone solve this inequality and show the step by step method of doing it, Many thanks!!

Solve:

3x(x+4)+3(x+4)=0

what is 1cmx1cmx1cm im mm2?

3x⁴-2x³-5x²-4/x²-4

HOW CAN I SOVLE QUADRATIC SIMTENEOUS EQUATION

how do i figure out x2+7x+10=0

please can you give me a step by step guide

2(3x+8)=-23+9

how do i solve 2(3b - 7) = 4 by expanding brackets?

3x+y=7 2x+y=6

how do quadratic equations work?

Eg. 4x2 + 3x - 8?

like i dont get how to do this problem:3y-4=2

f(x)=-3(x+5)(x-11)

how to factor 6y^2=29y+9

How to solve equation ln(x)=ln(x+2)-1

How to solve (3x-4)=(4x-3)2

i've got to............ write down 2 expressions for the perimeter of a square one with brackets and another without brackets of t+3

I need help understanding Solving One-Step Equations Using Multiplication and Division of Fractions

Consider the curves given in polar coordinates by:

r=1+sinθ and r=1+cosθ. Find the area in the region of the first quadrant outside r=1+sinθ and inside r=1+cosθ

If george is 378 of the age of his brother, and in 4 years he will be 1/2 of the age of his brother. What is the age of the brother?

Solve the simultaneous equations: x2 +2 y2 = 8 and x + 2y =8

I need help with this please help?

N+N=30 what is the number for N

nth tems

2x - 3y = 21 5x + 2y = 5

A gas bill consists of a fixed charge (£F) and charge (g pence) for each unit used. Mrs Ali used 350 units and paid 30 pounds. mr hill used 450 units and paid £35. find the fixed charge and the charge per unit.

How would you solve x^ + y^ = 25 y - 3x = 13

x2 + 2xy = 5 x + y = 3

Hi, I need a bit of help on how to solve the following. y = -4x + 4 y = x2 -6x - 8 I have tried to substitute equation one into equation two ( RHS must be equal) to give -4x + 4 = x2 -6x -8 I have then added all like terms to give but im then stuck and I think i have got the method wrong. Bit confused due to x2 and y = as I thought i did understand how to solve these so im now annoyed. x2 -10x -4 Any help on how to solve this would be helpful. Thanks

I really need help with topic. I don't get it at ALL. this is one of the questions used in class:- y=2x-1. y=x2 (Both x and y equal to 1 I just don't understand how or why) please explain

Sorry here is the problem 8x-(3x+10)=34

how do i solve x for (2/x+3)=9/4=5 and none is in parenthesis.

(X-2) over 3 + 1 = x over 7

3x-2=-29 6+1/2x=4 X/10+4=5 5x+3+x=75

4(8-x)=40

Solve for x. 50 - 32 % =x

3x+2 -------- + 3 = 4 thank you ,:) x-1 the ---- is meant to be divided or over (:

7-(x+1)=9-(2x-1)

solve the simultaneous equations, anyone help please?!

x + y = 8 x - y = 2

equation: 23-4x=-9 ——- 2

23-4x=-18 is the next step then -4x=18-23 -4x=-18-23 -4x=-41 can i get a step by step answer on how to conver this into x=41/4

please can i have help im really stuck , thanks.