-4x^2-12x+20=0

Simple and best practice solution for -4x^2-12x+20=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^2-12x+20=0 equation:


Simplifying
-4x2 + -12x + 20 = 0

Reorder the terms:
20 + -12x + -4x2 = 0

Solving
20 + -12x + -4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(5 + -3x + -1x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(5 + -3x + -1x2)' equal to zero and attempt to solve: Simplifying 5 + -3x + -1x2 = 0 Solving 5 + -3x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -5 + 3x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + 3x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + 3x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 3x + x2 = 0 + 5 3x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 3x + x2 = 5 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 5 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 5 + 2.25 Combine like terms: 5 + 2.25 = 7.25 2.25 + 3x + x2 = 7.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 7.25 Calculate the square root of the right side: 2.692582404 Break this problem into two subproblems by setting (x + 1.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + 1.5 = 2.692582404 Simplifying x + 1.5 = 2.692582404 Reorder the terms: 1.5 + x = 2.692582404 Solving 1.5 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 2.692582404 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 2.692582404 + -1.5 x = 2.692582404 + -1.5 Combine like terms: 2.692582404 + -1.5 = 1.192582404 x = 1.192582404 Simplifying x = 1.192582404

Subproblem 2

x + 1.5 = -2.692582404 Simplifying x + 1.5 = -2.692582404 Reorder the terms: 1.5 + x = -2.692582404 Solving 1.5 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -2.692582404 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -2.692582404 + -1.5 x = -2.692582404 + -1.5 Combine like terms: -2.692582404 + -1.5 = -4.192582404 x = -4.192582404 Simplifying x = -4.192582404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.192582404, -4.192582404}

Solution

x = {1.192582404, -4.192582404}

See similar equations:

| 22-5[6v-1]=-63 | | 8+3.5c=2808 | | 12+(20/4)= | | -.5gt^2-6t+6=0 | | 3.5x+2(x-4)=5.5x-6-2x | | (2x-3)(4x^2-6x+9)=0 | | 12+20/4= | | 5x-18=9x+11 | | -2y-11=-17 | | 3(x+7)=5x-2(x-1) | | 12x-3y=-45 | | -y=2y-9 | | -3x-(-2x+2)=-2 | | (7m^2-3m-7)=(m^2-7m-6) | | a^4+8a^2+16=0 | | 11+2(5y+4)= | | 5(x-5)=6(x-5) | | 96+120= | | 7(10+-9d)+9= | | 5(12-1)= | | 8x-16=24 | | 5+2(a-6)=156 | | 0=14x^2-31x-10 | | 2x-(-3x+4)=-19 | | 5x^3-11x^2-13x+3=0 | | 2(0+2)= | | 0.9-0.7=4.2 | | -210=10-20n | | 5b+-8(-8+6b)= | | 2.10+12.99=21.39 | | 6-4a=a | | 9=2y+y |

Equations solver categories