7x^2+13x-4=20-9x

Simple and best practice solution for 7x^2+13x-4=20-9x 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 7x^2+13x-4=20-9x equation:


Simplifying
7x2 + 13x + -4 = 20 + -9x

Reorder the terms:
-4 + 13x + 7x2 = 20 + -9x

Solving
-4 + 13x + 7x2 = 20 + -9x

Solving for variable 'x'.

Reorder the terms:
-4 + -20 + 13x + 9x + 7x2 = 20 + -9x + -20 + 9x

Combine like terms: -4 + -20 = -24
-24 + 13x + 9x + 7x2 = 20 + -9x + -20 + 9x

Combine like terms: 13x + 9x = 22x
-24 + 22x + 7x2 = 20 + -9x + -20 + 9x

Reorder the terms:
-24 + 22x + 7x2 = 20 + -20 + -9x + 9x

Combine like terms: 20 + -20 = 0
-24 + 22x + 7x2 = 0 + -9x + 9x
-24 + 22x + 7x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-24 + 22x + 7x2 = 0

Factor a trinomial.
(-4 + -1x)(6 + -7x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(6 + -7x)' equal to zero and attempt to solve: Simplifying 6 + -7x = 0 Solving 6 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -7x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -7x = 0 + -6 -7x = 0 + -6 Combine like terms: 0 + -6 = -6 -7x = -6 Divide each side by '-7'. x = 0.8571428571 Simplifying x = 0.8571428571

Solution

x = {-4, 0.8571428571}

See similar equations:

| 16X-9=5X+3 | | 2x^2-28x=-6x^2-5x-14 | | x^2-20x-96=0 | | r^2+4=-4r | | 2p+3y+4y=27 | | x-1/5=x+5/15 | | 2b+b-3=1.5 | | m^2+18=9m | | -78=-6(-2+3a) | | N^2-3n=10 | | 5X+3=16X-9 | | x^2-18+45=0 | | 25=-4x | | 4x-8*2=36 | | (7x+4)(3x^2-20x-7)=0 | | 70=5(5x+1) | | (10x+3)(3x^2-20x-7)=0 | | 10+3x=22 | | 6a^2-11a=-4 | | x+x+2x=17-2x+1 | | 21=2t+9 | | 7(x-9)=8 | | (3x+1)(x+6)=0 | | ln(5x-6)=0 | | 4x-16=6x+3 | | 2s-28=-19+5s | | -x^2+x=-30 | | 2x^2+24x+53=5x+11 | | -(1+7x)-6(-7x)=36 | | log(x)+log(x+5)=log(5) | | 2x+5x=-1 | | 36x^3-12x^2-3x=0 |

Equations solver categories