10(x-3)(2x+7)=0

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Solution for 10(x-3)(2x+7)=0 equation: 


Simplifying
10(x + -3)(2x + 7) = 0

Reorder the terms:
10(-3 + x)(2x + 7) = 0

Reorder the terms:
10(-3 + x)(7 + 2x) = 0

Multiply (-3 + x) * (7 + 2x)
10(-3(7 + 2x) + x(7 + 2x)) = 0
10((7 * -3 + 2x * -3) + x(7 + 2x)) = 0
10((-21 + -6x) + x(7 + 2x)) = 0
10(-21 + -6x + (7 * x + 2x * x)) = 0
10(-21 + -6x + (7x + 2x2)) = 0

Combine like terms: -6x + 7x = 1x
10(-21 + 1x + 2x2) = 0
(-21 * 10 + 1x * 10 + 2x2 * 10) = 0
(-210 + 10x + 20x2) = 0

Solving
-210 + 10x + 20x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '10'.
10(-21 + x + 2x2) = 0

Factor a trinomial.
10((-7 + -2x)(3 + -1x)) = 0

Ignore the factor 10.

Subproblem 1
Set the factor '(-7 + -2x)' equal to zero and attempt to solve:

Simplifying
-7 + -2x = 0

Solving
-7 + -2x = 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 + -2x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -2x = 0 + 7
-2x = 0 + 7

Combine like terms: 0 + 7 = 7
-2x = 7

Divide each side by '-2'.
x = -3.5

Simplifying
x = -3.5

Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-3.5, 3}

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