4x^2+4x-16=0

Simple and best practice solution for 4x^2+4x-16=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+4x-16=0 equation:


Simplifying
4x2 + 4x + -16 = 0

Reorder the terms:
-16 + 4x + 4x2 = 0

Solving
-16 + 4x + 4x2 = 0

Solving for variable 'x'.

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

Ignore the factor 4.

Subproblem 1

Set the factor '(-4 + x + x2)' equal to zero and attempt to solve: Simplifying -4 + x + x2 = 0 Solving -4 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '4' to each side of the equation. -4 + x + 4 + x2 = 0 + 4 Reorder the terms: -4 + 4 + x + x2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x + x2 = 0 + 4 x + x2 = 0 + 4 Combine like terms: 0 + 4 = 4 x + x2 = 4 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = 4 + 0.25 Reorder the terms: 0.25 + x + x2 = 4 + 0.25 Combine like terms: 4 + 0.25 = 4.25 0.25 + x + x2 = 4.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (x + 0.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

x + 0.5 = 2.061552813 Simplifying x + 0.5 = 2.061552813 Reorder the terms: 0.5 + x = 2.061552813 Solving 0.5 + x = 2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 2.061552813 + -0.5 x = 2.061552813 + -0.5 Combine like terms: 2.061552813 + -0.5 = 1.561552813 x = 1.561552813 Simplifying x = 1.561552813

Subproblem 2

x + 0.5 = -2.061552813 Simplifying x + 0.5 = -2.061552813 Reorder the terms: 0.5 + x = -2.061552813 Solving 0.5 + x = -2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -2.061552813 + -0.5 x = -2.061552813 + -0.5 Combine like terms: -2.061552813 + -0.5 = -2.561552813 x = -2.561552813 Simplifying x = -2.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.561552813, -2.561552813}

Solution

x = {1.561552813, -2.561552813}

See similar equations:

| 18=6(x-4) | | .03x^2+1.2x-6=0 | | 2x+1-3x+5=8+3x+22 | | -2(p-1)=-8 | | 4x=7x+21 | | 16a-12a=20 | | -2x-4=-14 | | 2y+2x-y-40=180 | | -142+11x=83-4x | | 7=12-v | | 5x+5=4x+12 | | 7y-4x=5-4x | | 7(4x+4)=-84 | | 4y-76=-78+4y | | 3-j=1 | | (4+4)-(5*7)+76= | | 4(6+5x)=144 | | (4v-28)(28v-4)=0 | | 3y+70=13y+10 | | 1=2-r | | h=rt-rm+mt | | -2-18=8-3x | | 5(r-1)=3(y+7) | | -7y+25=4 | | -6x+7=-5x-3 | | 6(7+10x)+2(5+4x)=8 | | 5x+20=-56+x | | 5x+10=-5x+110 | | 14p-12p=16 | | 4-8x=-5x+16 | | 5x+20=56+x | | E(m)=850m(0.9)t-m |

Equations solver categories