7b^2+49b=-84

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Solution for 7b^2+49b=-84 equation:


Simplifying
7b2 + 49b = -84

Reorder the terms:
49b + 7b2 = -84

Solving
49b + 7b2 = -84

Solving for variable 'b'.

Reorder the terms:
84 + 49b + 7b2 = -84 + 84

Combine like terms: -84 + 84 = 0
84 + 49b + 7b2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(12 + 7b + b2) = 0

Factor a trinomial.
7((4 + b)(3 + b)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(4 + b)' equal to zero and attempt to solve: Simplifying 4 + b = 0 Solving 4 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + b = 0 + -4 b = 0 + -4 Combine like terms: 0 + -4 = -4 b = -4 Simplifying b = -4

Subproblem 2

Set the factor '(3 + b)' equal to zero and attempt to solve: Simplifying 3 + b = 0 Solving 3 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + b = 0 + -3 Combine like terms: 3 + -3 = 0 0 + b = 0 + -3 b = 0 + -3 Combine like terms: 0 + -3 = -3 b = -3 Simplifying b = -3

Solution

b = {-4, -3}

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