(9x^2+4x-5)+(-3x^2+6x+1)=

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Solution for (9x^2+4x-5)+(-3x^2+6x+1)= equation:


Simplifying
(9x2 + 4x + -5) + (-3x2 + 6x + 1) = 0

Reorder the terms:
(-5 + 4x + 9x2) + (-3x2 + 6x + 1) = 0

Remove parenthesis around (-5 + 4x + 9x2)
-5 + 4x + 9x2 + (-3x2 + 6x + 1) = 0

Reorder the terms:
-5 + 4x + 9x2 + (1 + 6x + -3x2) = 0

Remove parenthesis around (1 + 6x + -3x2)
-5 + 4x + 9x2 + 1 + 6x + -3x2 = 0

Reorder the terms:
-5 + 1 + 4x + 6x + 9x2 + -3x2 = 0

Combine like terms: -5 + 1 = -4
-4 + 4x + 6x + 9x2 + -3x2 = 0

Combine like terms: 4x + 6x = 10x
-4 + 10x + 9x2 + -3x2 = 0

Combine like terms: 9x2 + -3x2 = 6x2
-4 + 10x + 6x2 = 0

Solving
-4 + 10x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-2 + 5x + 3x2) = 0

Factor a trinomial.
2((-2 + -1x)(1 + -3x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 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 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Solution

x = {-2, 0.3333333333}

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