15x^2-70x-400=0

Simple and best practice solution for 15x^2-70x-400=0 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 15x^2-70x-400=0 equation:


Simplifying
15x2 + -70x + -400 = 0

Reorder the terms:
-400 + -70x + 15x2 = 0

Solving
-400 + -70x + 15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-80 + -14x + 3x2) = 0

Factor a trinomial.
5((-10 + -3x)(8 + -1x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-10 + -3x)' equal to zero and attempt to solve: Simplifying -10 + -3x = 0 Solving -10 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -3x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -3x = 0 + 10 -3x = 0 + 10 Combine like terms: 0 + 10 = 10 -3x = 10 Divide each side by '-3'. x = -3.333333333 Simplifying x = -3.333333333

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 = {-3.333333333, 8}

See similar equations:

| 3y-11=-5 | | 2y/10=0 | | 9c+16=-74 | | -18=-10y+12 | | 7t-t-5=5t-8 | | 5n=4n+40 | | -4(q+3)=-12 | | 6x+12=5x-4 | | 8(w+4)=-32 | | 6+4r=18 | | 5x+50=o | | 4x/7-2/5=6 | | 7x-6=x+6 | | 12/5=n8 | | 12x+8y=48 | | 42.2x-93.6=19.5+96.7x | | 33=3(5+s) | | 6x+6=-13 | | 8ln4/4 | | 0.55+1.2(1.2+0.2x)=x-0.75(x+0.6) | | x-15+14=12 | | -2h+7=-17 | | 3(-x-4y)-4(5y+7x)= | | y=4(10)+1 | | 10-7g=3 | | X^3-2x^2-x+3=0 | | 2x/5-x=x/10-32/2 | | 4f+5=41 | | 6+2h=16 | | -2e+5=27 | | y=4(8)+1 | | -5+3c=16 |

Equations solver categories