(x^2+7x+8)-(x^2-2x-5)=

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Solution for (x^2+7x+8)-(x^2-2x-5)= equation:


Simplifying
(x2 + 7x + 8) + -1(x2 + -2x + -5) = 0

Reorder the terms:
(8 + 7x + x2) + -1(x2 + -2x + -5) = 0

Remove parenthesis around (8 + 7x + x2)
8 + 7x + x2 + -1(x2 + -2x + -5) = 0

Reorder the terms:
8 + 7x + x2 + -1(-5 + -2x + x2) = 0
8 + 7x + x2 + (-5 * -1 + -2x * -1 + x2 * -1) = 0
8 + 7x + x2 + (5 + 2x + -1x2) = 0

Reorder the terms:
8 + 5 + 7x + 2x + x2 + -1x2 = 0

Combine like terms: 8 + 5 = 13
13 + 7x + 2x + x2 + -1x2 = 0

Combine like terms: 7x + 2x = 9x
13 + 9x + x2 + -1x2 = 0

Combine like terms: x2 + -1x2 = 0
13 + 9x + 0 = 0
13 + 9x = 0

Solving
13 + 9x = 0

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 9x = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 9x = 0 + -13
9x = 0 + -13

Combine like terms: 0 + -13 = -13
9x = -13

Divide each side by '9'.
x = -1.444444444

Simplifying
x = -1.444444444

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