4x^2-26x-40=0

Simple and best practice solution for 4x^2-26x-40=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^2-26x-40=0 equation:


Simplifying
4x2 + -26x + -40 = 0

Reorder the terms:
-40 + -26x + 4x2 = 0

Solving
-40 + -26x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-20 + -13x + 2x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-20 + -13x + 2x2)' equal to zero and attempt to solve: Simplifying -20 + -13x + 2x2 = 0 Solving -20 + -13x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -10 + -6.5x + x2 = 0 Move the constant term to the right: Add '10' to each side of the equation. -10 + -6.5x + 10 + x2 = 0 + 10 Reorder the terms: -10 + 10 + -6.5x + x2 = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -6.5x + x2 = 0 + 10 -6.5x + x2 = 0 + 10 Combine like terms: 0 + 10 = 10 -6.5x + x2 = 10 The x term is -6.5x. Take half its coefficient (-3.25). Square it (10.5625) and add it to both sides. Add '10.5625' to each side of the equation. -6.5x + 10.5625 + x2 = 10 + 10.5625 Reorder the terms: 10.5625 + -6.5x + x2 = 10 + 10.5625 Combine like terms: 10 + 10.5625 = 20.5625 10.5625 + -6.5x + x2 = 20.5625 Factor a perfect square on the left side: (x + -3.25)(x + -3.25) = 20.5625 Calculate the square root of the right side: 4.534589287 Break this problem into two subproblems by setting (x + -3.25) equal to 4.534589287 and -4.534589287.

Subproblem 1

x + -3.25 = 4.534589287 Simplifying x + -3.25 = 4.534589287 Reorder the terms: -3.25 + x = 4.534589287 Solving -3.25 + x = 4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = 4.534589287 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = 4.534589287 + 3.25 x = 4.534589287 + 3.25 Combine like terms: 4.534589287 + 3.25 = 7.784589287 x = 7.784589287 Simplifying x = 7.784589287

Subproblem 2

x + -3.25 = -4.534589287 Simplifying x + -3.25 = -4.534589287 Reorder the terms: -3.25 + x = -4.534589287 Solving -3.25 + x = -4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = -4.534589287 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = -4.534589287 + 3.25 x = -4.534589287 + 3.25 Combine like terms: -4.534589287 + 3.25 = -1.284589287 x = -1.284589287 Simplifying x = -1.284589287

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.784589287, -1.284589287}

Solution

x = {7.784589287, -1.284589287}

See similar equations:

| 0=-w^2+25w+500 | | -x+3+34x+5=0 | | [(5x^4)/4]-7x | | 5x-7*x+3=2x+12 | | 3n+3=57 | | (4x^3)+(3x^2)-(6x)=0 | | 8(x+1)=5-2(8x+16) | | 3Y-5y=-25 | | 3.6=-2x*5.8 | | 6b+6=-30 | | m^2+3a=r | | 9x+10y=166 | | 3.6=2x+5.8 | | x=9+26 | | 0.6x+0.75y+0.8z=14.8 | | -72p+5p-7p+50= | | (2c-5)(5c+8)= | | -20=6b-10+6 | | b-2.05=1.95 | | Y-2/5=1/2 | | g+4g=20 | | 3(2y-1)=12 | | 12480X^2-1300000X-19278000=0 | | 8r^2-16r-128=0 | | 0.3x+0.2(10-X)=.15(30) | | 12.8×3/4= | | 2y-3/5=-1/3 | | [x-3][-5]=18 | | 15a=120 | | -20y-2x=-2 | | 1=y+3 | | 0.75n+1.75=20 |

Equations solver categories