2x^2-8=15x

Simple and best practice solution for 2x^2-8=15x 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 2x^2-8=15x equation:


Simplifying
2x2 + -8 = 15x

Reorder the terms:
-8 + 2x2 = 15x

Solving
-8 + 2x2 = 15x

Solving for variable 'x'.

Reorder the terms:
-8 + -15x + 2x2 = 15x + -15x

Combine like terms: 15x + -15x = 0
-8 + -15x + 2x2 = 0

Factor a trinomial.
(-1 + -2x)(8 + -1x) = 0

Subproblem 1

Set the factor '(-1 + -2x)' equal to zero and attempt to solve: Simplifying -1 + -2x = 0 Solving -1 + -2x = 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 + -2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2x = 0 + 1 -2x = 0 + 1 Combine like terms: 0 + 1 = 1 -2x = 1 Divide each side by '-2'. x = -0.5 Simplifying x = -0.5

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 = {-0.5, 8}

See similar equations:

| -8-x=13 | | 15=-(12-z) | | b-8+6b=26 | | 12x-7=2x-6 | | -24=-3+3v | | (x^2-4x+4)(-x^2+8x-17)=0 | | x=n+8 | | sin(0.01716(-107+x)+1.5336)=0.012867x-0.053 | | 2(5x+4)=68 | | 4(7x+7)=336 | | 2b^2=15b-7 | | 3(10+4x)=42 | | (x-(4-i))(x+(4-i))=0 | | 4(5x+1)=124 | | 5+5w=-5 | | 4(2x+10)=128 | | (-2x)+5=13 | | 5(5+3x)=100 | | 5(4x+1)=5 | | 1+4(2-3k)=7(1+9k)-8(-5k-6) | | 4n+7=41 | | 9n^2=33n-28 | | 3x+1=y+12 | | 33(15x+3)-x=20(20x-30)-(x+1) | | 3x+2x*y+3=8 | | 7(4-y)=5y+22 | | -3x+x-8=-12+2x | | (9+v)(3v+4)=0 | | 4x+3y+z=15 | | (9+v)(3v-4)=0 | | 11w=-16+7m | | 25(8x-16)+4x-4=50(6x+4)-1 |

Equations solver categories