9=2x^2-7x

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


Simplifying
9 = 2x2 + -7x

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

Solving
9 = -7x + 2x2

Solving for variable 'x'.

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

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

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

Factor a trinomial.
(9 + -2x)(1 + x) = 0

Subproblem 1

Set the factor '(9 + -2x)' equal to zero and attempt to solve: Simplifying 9 + -2x = 0 Solving 9 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2x = 0 + -9 -2x = 0 + -9 Combine like terms: 0 + -9 = -9 -2x = -9 Divide each side by '-2'. x = 4.5 Simplifying x = 4.5

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 = {4.5, -1}

See similar equations:

| 3(x-3.2)=9.9 | | 24=4(t+12) | | x=5-2/5*10 | | 5-2/5*10 | | x-8=6.49 | | 570=6x^2+84x | | 6x^2+35x=5x | | 5-2/5(10) | | 3+5x-7-9x+10+4(2x-3)=12-15 | | 12+7x-9=3x+5-8-4x | | G-34=12 | | 9+7x-12=3x+5-8-4x | | 38=-2+b | | 39=h-16 | | P+15=70 | | -24=n/2 | | 18=9+e | | 5x-15+5x-15+3x-1+4x+34=360 | | -7w=84 | | q-12=-26 | | X=(x^2+3x)(9x-8) | | z-8=-19 | | 3*5-4+5= | | -50+75= | | 28-7x=12x-9(11x-12) | | -26+11x=3(2+9x) | | -4(-3)/-9= | | 0.3+0.6+0.7+0.8=x | | -3(1+3x)=7-7x | | 1200(1/2)^x | | 3*cos(2x)=-1.8 | | y=-2*0+5 |

Equations solver categories