x^2+7x-9=9

Simple and best practice solution for x^2+7x-9=9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for x^2+7x-9=9 equation:


Simplifying
x2 + 7x + -9 = 9

Reorder the terms:
-9 + 7x + x2 = 9

Solving
-9 + 7x + x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + -9 + 7x + x2 = 9 + -9

Combine like terms: -9 + -9 = -18
-18 + 7x + x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-18 + 7x + x2 = 0

Factor a trinomial.
(-9 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-9, 2}

See similar equations:

| 3xn=9+5xn | | 7/x=3/12 | | 2(x+1)-3x=5 | | -18x+24+9x=7x+42 | | 3x-4-14=2x-7+5 | | -9-2(-1+7q/5)=-2+16q/5 | | 4(k-3+1)=33 | | 15/3+1=6 | | -16.2=2478.956845xln(x) | | 100x^2-121y^2=0 | | 3x+4=5x+16 | | D+64=44 | | 11+1/6n=-1 | | 3(x-1.2)=9 | | 6x^2-3x^2-36=0 | | -16.2=2478.956845ln(x) | | x+60+3x+30+6x-10=180 | | 2(3+5m)-9=45 | | 2/5(1-5a)=37/5-4a | | 1/10+1/40 | | y+1=4/3(x-4) | | 1/70+1/30 | | (x+4)(x+4)=2x^2+9x-14 | | x=0.1670 | | (w+5)(w+5)=2w^2+13w-3 | | 8*(x^3)-8*x=0 | | 2v^2+12v+19=(v+2)(v+2) | | J+A+V+I+N= | | 5m+7=532 | | 2z+98= | | 5*(a-4)*8a=55 | | 2x^2+18x+37=(x+4)(x+4) |

Equations solver categories