-(3x+5)(5x+2)=

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Solution for -(3x+5)(5x+2)= equation: 


Simplifying
-1(3x + 5)(5x + 2) = 0

Reorder the terms:
-1(5 + 3x)(5x + 2) = 0

Reorder the terms:
-1(5 + 3x)(2 + 5x) = 0

Multiply (5 + 3x) * (2 + 5x)
-1(5(2 + 5x) + 3x * (2 + 5x)) = 0
-1((2 * 5 + 5x * 5) + 3x * (2 + 5x)) = 0
-1((10 + 25x) + 3x * (2 + 5x)) = 0
-1(10 + 25x + (2 * 3x + 5x * 3x)) = 0
-1(10 + 25x + (6x + 15x2)) = 0

Combine like terms: 25x + 6x = 31x
-1(10 + 31x + 15x2) = 0
(10 * -1 + 31x * -1 + 15x2 * -1) = 0
(-10 + -31x + -15x2) = 0

Solving
-10 + -31x + -15x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(10 + 31x + 15x2) = 0

Factor a trinomial.
-1((5 + 3x)(2 + 5x)) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(5 + 3x)' equal to zero and attempt to solve:

Simplifying
5 + 3x = 0

Solving
5 + 3x = 0

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

Add '-5' to each side of the equation.
5 + -5 + 3x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 3x = 0 + -5
3x = 0 + -5

Combine like terms: 0 + -5 = -5
3x = -5

Divide each side by '3'.
x = -1.666666667

Simplifying
x = -1.666666667

Subproblem 2
Set the factor '(2 + 5x)' equal to zero and attempt to solve:

Simplifying
2 + 5x = 0

Solving
2 + 5x = 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 + 5x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 5x = 0 + -2
5x = 0 + -2

Combine like terms: 0 + -2 = -2
5x = -2

Divide each side by '5'.
x = -0.4

Simplifying
x = -0.4
Solution
x = {-1.666666667, -0.4}

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