(8x^2+9x-2)-(3x^2-6)=

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Solution for (8x^2+9x-2)-(3x^2-6)= equation:


Simplifying
(8x2 + 9x + -2) + -1(3x2 + -6) = 0

Reorder the terms:
(-2 + 9x + 8x2) + -1(3x2 + -6) = 0

Remove parenthesis around (-2 + 9x + 8x2)
-2 + 9x + 8x2 + -1(3x2 + -6) = 0

Reorder the terms:
-2 + 9x + 8x2 + -1(-6 + 3x2) = 0
-2 + 9x + 8x2 + (-6 * -1 + 3x2 * -1) = 0
-2 + 9x + 8x2 + (6 + -3x2) = 0

Reorder the terms:
-2 + 6 + 9x + 8x2 + -3x2 = 0

Combine like terms: -2 + 6 = 4
4 + 9x + 8x2 + -3x2 = 0

Combine like terms: 8x2 + -3x2 = 5x2
4 + 9x + 5x2 = 0

Solving
4 + 9x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(1 + x)(4 + 5x) = 0

Subproblem 1

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Subproblem 2

Set the factor '(4 + 5x)' equal to zero and attempt to solve: Simplifying 4 + 5x = 0 Solving 4 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5x = 0 + -4 5x = 0 + -4 Combine like terms: 0 + -4 = -4 5x = -4 Divide each side by '5'. x = -0.8 Simplifying x = -0.8

Solution

x = {-1, -0.8}

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