2x^2+x-15=6

Simple and best practice solution for 2x^2+x-15=6 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+x-15=6 equation:


Simplifying
2x2 + x + -15 = 6

Reorder the terms:
-15 + x + 2x2 = 6

Solving
-15 + x + 2x2 = 6

Solving for variable 'x'.

Reorder the terms:
-15 + -6 + x + 2x2 = 6 + -6

Combine like terms: -15 + -6 = -21
-21 + x + 2x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-21 + x + 2x2 = 0

Factor a trinomial.
(-7 + -2x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -2x)' equal to zero and attempt to solve: Simplifying -7 + -2x = 0 Solving -7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -2x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -2x = 0 + 7 -2x = 0 + 7 Combine like terms: 0 + 7 = 7 -2x = 7 Divide each side by '-2'. x = -3.5 Simplifying x = -3.5

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-3.5, 3}

See similar equations:

| x^2+x+0=520 | | -8=4(q-2)+4 | | 7x-12=-10x^2 | | 7p^2+20+3=6 | | -8=4(q-2)+9 | | x+4+3x=16+2x | | 16x^3+17x^2+x=0 | | 17x+34=7x | | -3y+5(y-7)=-19 | | 16x^3+17x^2+x-1=0 | | -8x+6(x+2)=-2 | | 223-5x=31x+19 | | hbt=2p | | 3(4-2x)=X-2 | | 13-10x=79-31x | | 3v+8(v-5)=-29 | | v=hm | | v=lw | | 3x+18=12-63 | | 7n^2+25n+12=0 | | 6x^2-3y=0 | | -18-(-26)= | | 7k^2+50k+7=0 | | x^2-3x-33=-5 | | 10=-16t^2+20t+5 | | 5(2x-12)=70 | | x-3x+4=3-9 | | 2(x-20)=60 | | (7ab)-(5a)= | | 5x-11=-1 | | (v+2)(7v+3)=0 | | 2x+21-6x=-12+x-7 |

Equations solver categories