2x^2+7=-9x

Simple and best practice solution for 2x^2+7=-9x 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+7=-9x equation:


Simplifying
2x2 + 7 = -9x

Reorder the terms:
7 + 2x2 = -9x

Solving
7 + 2x2 = -9x

Solving for variable 'x'.

Reorder the terms:
7 + 9x + 2x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
7 + 9x + 2x2 = 0

Factor a trinomial.
(7 + 2x)(1 + x) = 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 '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-3.5, -1}

See similar equations:

| ln(4x)=-1 | | (3x+6)(x-1)=(x+1)(x+9) | | 3x-2(4x-5)=10-5x | | 3y+4x=-8 | | 7x-2(0.88)=8 | | 30x=11 | | 3x+5(1.07)=8 | | 9z-6z+z-3z+3z=20 | | (X+2)(x-7)=-20 | | x^2=21x+22 | | lnx+ln(x)2=5 | | 9z-6z+v-3z+3z=20 | | (cotx-1)(sinx-1)=0 | | -2x-13+5x=-3x+11-2 | | 5-4x=3x | | (3x+6)(x-1)=(x-1)(x+9) | | 3x+5(0.88)=8 | | 2x-7=-1/2x-12 | | 6LNx=8 | | 10v+v-10v=7 | | 9x^2+16=-30x | | k/9=20 | | 7z+3z=10 | | 54+2x+(180-x-72)=180 | | m^2+9m+12=0 | | -7n+10=-6n-8 | | 1/3g=-8 | | 13z+161=180 | | 12d^2(7d-3)=5d(7d-3)+2(7d+3) | | 3s^2-13s+20=0 | | 54+2x+(180-x+72)=180 | | 90-5x+62-2x=180 |

Equations solver categories