(x-1)(x+4)=2

Simple and best practice solution for (x-1)(x+4)=2 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 (x-1)(x+4)=2 equation:


Simplifying
(x + -1)(x + 4) = 2

Reorder the terms:
(-1 + x)(x + 4) = 2

Reorder the terms:
(-1 + x)(4 + x) = 2

Multiply (-1 + x) * (4 + x)
(-1(4 + x) + x(4 + x)) = 2
((4 * -1 + x * -1) + x(4 + x)) = 2
((-4 + -1x) + x(4 + x)) = 2
(-4 + -1x + (4 * x + x * x)) = 2
(-4 + -1x + (4x + x2)) = 2

Combine like terms: -1x + 4x = 3x
(-4 + 3x + x2) = 2

Solving
-4 + 3x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
-4 + -2 + 3x + x2 = 2 + -2

Combine like terms: -4 + -2 = -6
-6 + 3x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-6 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 3x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + 3x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 3x + x2 = 0 + 6
3x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
3x + x2 = 6

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 = 6 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 6 + 2.25

Combine like terms: 6 + 2.25 = 8.25
2.25 + 3x + x2 = 8.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(x + 1.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

x + 1.5 = 2.872281323 Simplifying x + 1.5 = 2.872281323 Reorder the terms: 1.5 + x = 2.872281323 Solving 1.5 + x = 2.872281323 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 = 2.872281323 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 2.872281323 + -1.5 x = 2.872281323 + -1.5 Combine like terms: 2.872281323 + -1.5 = 1.372281323 x = 1.372281323 Simplifying x = 1.372281323

Subproblem 2

x + 1.5 = -2.872281323 Simplifying x + 1.5 = -2.872281323 Reorder the terms: 1.5 + x = -2.872281323 Solving 1.5 + x = -2.872281323 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 = -2.872281323 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -2.872281323 + -1.5 x = -2.872281323 + -1.5 Combine like terms: -2.872281323 + -1.5 = -4.372281323 x = -4.372281323 Simplifying x = -4.372281323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.372281323, -4.372281323}

See similar equations:

| 4(x-2)=-4x+48 | | 4k-12-k=k-6 | | 6p-3=3p+1 | | 2s+s+s+12=132 | | 288=(x+2)(x)(6) | | x^5=64x^2 | | 9+12s-7=9s+22-7s | | r^2-30r+29=0 | | 4(x-2)=-4x+32 | | x-141=-276 | | 12x^4-7x^2-6x+16x^3=0 | | -6x+7=55 | | t(6t+t)=0 | | 4.6x+23=46 | | (X-5)(x+3)= | | 4w^2+20w+25=0 | | 4s+11s=105 | | (x^2-8x+16)(2x-8)-(x^2-8x+12)(2(x-4))=0 | | 9c^2-16p^2=0 | | 5t-8=22-t | | 4(3y-1)-6=5(y+2) | | -(5y+1)-(-4y-2)=-6 | | 22x^2-29x=0 | | 6r^2-23r+10= | | 36s^2+60sg+25g^2=0 | | 9-(2b-6)=21 | | 3q+5+2q-5=65 | | 9(2x+8)=20-(x+5) | | -x=-1 | | 9r^2-12r+4=0 | | x^4-x^2-1=0 | | 4m+9+5m-12=42 |

Equations solver categories