16x^2+7=-9x^2-40x

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Solution for 16x^2+7=-9x^2-40x equation:


Simplifying
16x2 + 7 = -9x2 + -40x

Reorder the terms:
7 + 16x2 = -9x2 + -40x

Reorder the terms:
7 + 16x2 = -40x + -9x2

Solving
7 + 16x2 = -40x + -9x2

Solving for variable 'x'.

Reorder the terms:
7 + 40x + 16x2 + 9x2 = -40x + -9x2 + 40x + 9x2

Combine like terms: 16x2 + 9x2 = 25x2
7 + 40x + 25x2 = -40x + -9x2 + 40x + 9x2

Reorder the terms:
7 + 40x + 25x2 = -40x + 40x + -9x2 + 9x2

Combine like terms: -40x + 40x = 0
7 + 40x + 25x2 = 0 + -9x2 + 9x2
7 + 40x + 25x2 = -9x2 + 9x2

Combine like terms: -9x2 + 9x2 = 0
7 + 40x + 25x2 = 0

Factor a trinomial.
(7 + 5x)(1 + 5x) = 0

Subproblem 1

Set the factor '(7 + 5x)' equal to zero and attempt to solve: Simplifying 7 + 5x = 0 Solving 7 + 5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 5x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 5x = 0 + -7 5x = 0 + -7 Combine like terms: 0 + -7 = -7 5x = -7 Divide each side by '5'. x = -1.4 Simplifying x = -1.4

Subproblem 2

Set the factor '(1 + 5x)' equal to zero and attempt to solve: Simplifying 1 + 5x = 0 Solving 1 + 5x = 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 + 5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 5x = 0 + -1 5x = 0 + -1 Combine like terms: 0 + -1 = -1 5x = -1 Divide each side by '5'. x = -0.2 Simplifying x = -0.2

Solution

x = {-1.4, -0.2}

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