-7-8x^2=-31

Simple and best practice solution for -7-8x^2=-31 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 -7-8x^2=-31 equation: 


Simplifying
-7 + -8x2 = -31

Solving
-7 + -8x2 = -31

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -8x2 = -31 + 7

Combine like terms: -7 + 7 = 0
0 + -8x2 = -31 + 7
-8x2 = -31 + 7

Combine like terms: -31 + 7 = -24
-8x2 = -24

Divide each side by '-8'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}

See similar equations:

| -10-5x^2=-330 | | 5(3x-2x)-16=3(2+6x)-16 | | 2x+64=100 | | 4a-3+7a=2+6a-8 | | 7d+9=6d+11 | | N+10(3)=8n | | 2(x+2)=3(x-x)+5 | | 0.4/36 | | 7+5+x=6+6 | | -x^2+x-16=0 | | 2x+2=3x-x+5 | | 8x+65=3x+30 | | -x^2+x-14=0 | | 5b-3=3b+19 | | 7-6[7-(9y+5)]= | | 6x-3(3x+2)=(x+7) | | 6x/9=-2 | | x*4-3=17 | | (1/5)(10x) | | 5x=3x+12-2 | | y+6/5 | | 3-8y=43 | | 7=8y-5y-5 | | 3x-7x-8=-4x+7-8 | | y-23=2(x-11) | | 3+6a=21 | | 2x^2+28x-507=0 | | (7/3,4/3)(-1/3,2/3) | | 4x-5/1-6x=x+10/x-6 | | (7/34/3)(-1/32/3) | | y/5-y=4 | | 7y+3(y-8)=3(y+1)-2 |

Equations solver categories