(9+x)(3x+10)=

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Solution for (9+x)(3x+10)= equation: 


Simplifying
(9 + x)(3x + 10) = 0

Reorder the terms:
(9 + x)(10 + 3x) = 0

Multiply (9 + x) * (10 + 3x)
(9(10 + 3x) + x(10 + 3x)) = 0
((10 * 9 + 3x * 9) + x(10 + 3x)) = 0
((90 + 27x) + x(10 + 3x)) = 0
(90 + 27x + (10 * x + 3x * x)) = 0
(90 + 27x + (10x + 3x2)) = 0

Combine like terms: 27x + 10x = 37x
(90 + 37x + 3x2) = 0

Solving
90 + 37x + 3x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(9 + x)(10 + 3x) = 0


Subproblem 1
Set the factor '(9 + x)' equal to zero and attempt to solve:

Simplifying
9 + x = 0

Solving
9 + x = 0

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

Add '-9' to each side of the equation.
9 + -9 + x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + x = 0 + -9
x = 0 + -9

Combine like terms: 0 + -9 = -9
x = -9

Simplifying
x = -9

Subproblem 2
Set the factor '(10 + 3x)' equal to zero and attempt to solve:

Simplifying
10 + 3x = 0

Solving
10 + 3x = 0

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

Add '-10' to each side of the equation.
10 + -10 + 3x = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 3x = 0 + -10
3x = 0 + -10

Combine like terms: 0 + -10 = -10
3x = -10

Divide each side by '3'.
x = -3.333333333

Simplifying
x = -3.333333333
Solution
x = {-9, -3.333333333}

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