-20+4a^2-2a=

Simple and best practice solution for -20+4a^2-2a= 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 -20+4a^2-2a= equation:


Simplifying
-20 + 4a2 + -2a = 0

Reorder the terms:
-20 + -2a + 4a2 = 0

Solving
-20 + -2a + 4a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-10 + -1a + 2a2) = 0

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

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + -1a)' equal to zero and attempt to solve: Simplifying -2 + -1a = 0 Solving -2 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1a = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1a = 0 + 2 -1a = 0 + 2 Combine like terms: 0 + 2 = 2 -1a = 2 Divide each side by '-1'. a = -2 Simplifying a = -2

Subproblem 2

Set the factor '(5 + -2a)' equal to zero and attempt to solve: Simplifying 5 + -2a = 0 Solving 5 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2a = 0 + -5 -2a = 0 + -5 Combine like terms: 0 + -5 = -5 -2a = -5 Divide each side by '-2'. a = 2.5 Simplifying a = 2.5

Solution

a = {-2, 2.5}

See similar equations:

| 2(3c-1)-1=2c+5 | | 4z+9=2z-6 | | 5+22a=2 | | 2(3c-1)1=2c+5 | | 231+16x=136.5+22.75x | | g(t)=t^2+5t-24 | | 7x(1-3x)(1+3x)= | | 5+2(x+-2)=19 | | 8a+12=-3a+3+31 | | 45=(10*y) | | 6x-8=12+7x+21 | | 0.7x-0.4=X | | 0=y^2-18y-477 | | 5(x+3)-x(x-3)=0 | | 20+6a-12=5a+15 | | .91+.12x=1.17+.09x | | 8xy=1 | | .76+.43x=1.69+.82x | | 9m-4(2m+-3)=11 | | a-4a+3a=12 | | 4x^2+16x+50=0 | | 13x=-2 | | 5x-3y+6=3 | | 72x^2+71x+7=0 | | .11+.1x=.4+.4x | | 35x+50x=x | | 3x+15=-12-2x-2x | | 467.6+5.85x=411.6+7.35x | | Sin(2x)cos(4x^2-2x)=0 | | 2(x*x)-3(y*y)=23 | | 7y-4+5=28 | | X+y-z=19 |

Equations solver categories