(2x-3)(x+1)=5

Simple and best practice solution for (2x-3)(x+1)=5 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 (2x-3)(x+1)=5 equation:


Simplifying
(2x + -3)(x + 1) = 5

Reorder the terms:
(-3 + 2x)(x + 1) = 5

Reorder the terms:
(-3 + 2x)(1 + x) = 5

Multiply (-3 + 2x) * (1 + x)
(-3(1 + x) + 2x * (1 + x)) = 5
((1 * -3 + x * -3) + 2x * (1 + x)) = 5
((-3 + -3x) + 2x * (1 + x)) = 5
(-3 + -3x + (1 * 2x + x * 2x)) = 5
(-3 + -3x + (2x + 2x2)) = 5

Combine like terms: -3x + 2x = -1x
(-3 + -1x + 2x2) = 5

Solving
-3 + -1x + 2x2 = 5

Solving for variable 'x'.

Reorder the terms:
-3 + -5 + -1x + 2x2 = 5 + -5

Combine like terms: -3 + -5 = -8
-8 + -1x + 2x2 = 5 + -5

Combine like terms: 5 + -5 = 0
-8 + -1x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-4 + -0.5x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -0.5x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + -0.5x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -0.5x + x2 = 0 + 4
-0.5x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
-0.5x + x2 = 4

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 4 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 4 + 0.0625

Combine like terms: 4 + 0.0625 = 4.0625
0.0625 + -0.5x + x2 = 4.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(x + -0.25) equal to 2.015564437 and -2.015564437.

Subproblem 1

x + -0.25 = 2.015564437 Simplifying x + -0.25 = 2.015564437 Reorder the terms: -0.25 + x = 2.015564437 Solving -0.25 + x = 2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 2.015564437 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 2.015564437 + 0.25 x = 2.015564437 + 0.25 Combine like terms: 2.015564437 + 0.25 = 2.265564437 x = 2.265564437 Simplifying x = 2.265564437

Subproblem 2

x + -0.25 = -2.015564437 Simplifying x + -0.25 = -2.015564437 Reorder the terms: -0.25 + x = -2.015564437 Solving -0.25 + x = -2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -2.015564437 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -2.015564437 + 0.25 x = -2.015564437 + 0.25 Combine like terms: -2.015564437 + 0.25 = -1.765564437 x = -1.765564437 Simplifying x = -1.765564437

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.265564437, -1.765564437}

See similar equations:

| X/14=18 | | -4y-4y=-14-10 | | 6(3-2)=18 | | 2x(x-3)(x+2)= | | a=3400t+600 | | -4/5z-2/5z=3/5+3/5 | | 90=15x+6y | | 12.56=(2*3.14/3)r | | 1/3(15d+3c)-1/2(8c-10d) | | w+5=w+1 | | 1/8b=6 | | 7(a+1)-3a=5+4(2a+1) | | 14=s-4 | | 2+9r-12=125 | | x*y=144 | | -2/3+1/3=4/3x+4/3x | | y=1/-5 | | -28=-5x | | 20(x+1/4) | | 6(6-2)=18 | | -4y/2=30 | | 5u=-8/7 | | 1/9=y | | 2/3x+5=12 | | 15-4y=y | | -5y/2=30 | | 2x/3-5=17 | | 4=g+13 | | Y+3/8y^2+7y-1 | | 14-6-(-15)-(18)+(-7)= | | 6(x+6)=5x-2 | | 2+16=-y-y |

Equations solver categories