80=(x-5)(x+11)

Simple and best practice solution for 80=(x-5)(x+11) 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 80=(x-5)(x+11) equation: 


Simplifying
80 = (x + -5)(x + 11)

Reorder the terms:
80 = (-5 + x)(x + 11)

Reorder the terms:
80 = (-5 + x)(11 + x)

Multiply (-5 + x) * (11 + x)
80 = (-5(11 + x) + x(11 + x))
80 = ((11 * -5 + x * -5) + x(11 + x))
80 = ((-55 + -5x) + x(11 + x))
80 = (-55 + -5x + (11 * x + x * x))
80 = (-55 + -5x + (11x + x2))

Combine like terms: -5x + 11x = 6x
80 = (-55 + 6x + x2)

Solving
80 = -55 + 6x + x2

Solving for variable 'x'.

Combine like terms: 80 + 55 = 135
135 + -6x + -1x2 = -55 + 6x + x2 + 55 + -6x + -1x2

Reorder the terms:
135 + -6x + -1x2 = -55 + 55 + 6x + -6x + x2 + -1x2

Combine like terms: -55 + 55 = 0
135 + -6x + -1x2 = 0 + 6x + -6x + x2 + -1x2
135 + -6x + -1x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
135 + -6x + -1x2 = 0 + x2 + -1x2
135 + -6x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
135 + -6x + -1x2 = 0

Factor a trinomial.
(9 + -1x)(15 + x) = 0


Subproblem 1
Set the factor '(9 + -1x)' equal to zero and attempt to solve:

Simplifying
9 + -1x = 0

Solving
9 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + -1x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = 0 + -9
-1x = 0 + -9

Combine like terms: 0 + -9 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

Subproblem 2
Set the factor '(15 + x)' equal to zero and attempt to solve:

Simplifying
15 + x = 0

Solving
15 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-15' to each side of the equation.
15 + -15 + x = 0 + -15

Combine like terms: 15 + -15 = 0
0 + x = 0 + -15
x = 0 + -15

Combine like terms: 0 + -15 = -15
x = -15

Simplifying
x = -15
Solution
x = {9, -15}

See similar equations:

| 10+3q=14+2q | | 2x^3-6x^2-6x-2=0 | | 92=6x-7(x-12) | | x-41/4 | | x=5(6+6) | | 2(6x+5)-4(3x-1)=2 | | 32+4y-2=15y-12-4y | | n-11=-37 | | 5x^2+3x=120-22x | | 7x--6(2x-8)=8 | | 84=x+x+5+2x-1 | | 84=x+x+5+2x-2 | | 36/6(3+2+1) | | 9x-42=33x+42 | | 84=x+x+5+2x-3 | | 2x^3-6x^2+8x-2=0 | | 3x-10x-16=12 | | -23=17+4x | | 6a^2+5ab-4ab^2=0 | | 3+2[4x-(4+3x)]=-1 | | 3(x+1)=3x-3 | | 4/y-2=-9-2/y-1 | | 84=x+x+5+2x+3 | | 2x^3-6x^2-8x-2=0 | | 3k-7=16 | | 195=-10x+35 | | 25x+16x=25 | | -10x+6=-44 | | .75y=.66y+5 | | 9x+1=109 | | -4x+1=3(x+.33)-7x | | (x^2y^2-1)dy+(2xy^3)dx=0 |

Equations solver categories