4x^2-2x-90=0

Simple and best practice solution for 4x^2-2x-90=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 4x^2-2x-90=0 equation:


Simplifying
4x2 + -2x + -90 = 0

Reorder the terms:
-90 + -2x + 4x2 = 0

Solving
-90 + -2x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-45 + -1x + 2x2) = 0

Factor a trinomial.
2((-9 + -2x)(5 + -1x)) = 0

Ignore the factor 2.

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 '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {-4.5, 5}

See similar equations:

| 14b=16b+32 | | 1+8x+2-4x=4(7x+9)-7(x+12) | | 3x+x-1=0 | | -5(-2z)=80 | | x+x+1=123 | | 4c=c^2+4 | | 5x+0.4=4x | | 6-60=6a | | 3x+1.0=x | | (5-3s)(3s+5)= | | 17r=0 | | 4(4+c)=3(c-4) | | 5x^2+2=-7x | | 25x+18=26x+24 | | 14x-15=16x-27 | | x^2+56x=0 | | -32y*y-24y=0 | | 0.25x^2-2x+4=0 | | 3x^2+22x+7=0 | | 14x+22=45-14x+12+36x | | 21x=x | | -2(d+1.4)-1.8=20.6 | | 27t+8t=9(t+3) | | -9+9=7+k | | 4(-.5)+2y=0 | | -0.625+m=.33 | | 32x^2+28x-15=0 | | 5+b=-16-6 | | -4x^2-8x+45=0 | | x^2-16x+49=0 | | t+16=0 | | 18c*c+6c=0 |

Equations solver categories