x^2-7x=8

Simple and best practice solution for x^2-7x=8 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=8 equation:


Simplifying
x2 + -7x = 8

Reorder the terms:
-7x + x2 = 8

Solving
-7x + x2 = 8

Solving for variable 'x'.

Reorder the terms:
-8 + -7x + x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -7x + x2 = 0

Factor a trinomial.
(-1 + -1x)(8 + -1x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Solution

x = {-1, 8}

See similar equations:

| 5v^2-11+6= | | -2(-3-3)(-2-4)-(-3-2)+3(4-2)= | | 2x^5-11x^4-30x^3+64x^2-4x-21=0 | | 2x^5-11x^4-30x^3+64x^2-4x-2=01 | | 2(x-6)=2x+16 | | 12y-19y=35 | | 7.5x=35.2+x | | 12y+19y=35 | | -6+2x=10 | | 35.2x=5.2x+x | | x+12-28+3=176 | | 35.2x=5.2+x | | 8d-6=34 | | 12-28+3=176 | | 24=-8m | | 19x+26=41+14x | | 1.142x=5+x | | 1-(-4)x=(-8) | | b=a+9 | | 6x^2+39x+60=0 | | 24x=8(x+6) | | 33=5(x+8)+3 | | -1+13=6b-1-5b | | x+(-5)=(-1) | | 5x+2=14-x | | 5-5n=15 | | p^2-10p+21=0 | | 2x+4=-6 | | 10x^2-5x=10 | | 7r=28 | | (2x-7)-5=-4 | | 3x-7=1x+6 |

Equations solver categories