(4b+7)(4b+8)=

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Solution for (4b+7)(4b+8)= equation:


Simplifying
(4b + 7)(4b + 8) = 0

Reorder the terms:
(7 + 4b)(4b + 8) = 0

Reorder the terms:
(7 + 4b)(8 + 4b) = 0

Multiply (7 + 4b) * (8 + 4b)
(7(8 + 4b) + 4b * (8 + 4b)) = 0
((8 * 7 + 4b * 7) + 4b * (8 + 4b)) = 0
((56 + 28b) + 4b * (8 + 4b)) = 0
(56 + 28b + (8 * 4b + 4b * 4b)) = 0
(56 + 28b + (32b + 16b2)) = 0

Combine like terms: 28b + 32b = 60b
(56 + 60b + 16b2) = 0

Solving
56 + 60b + 16b2 = 0

Solving for variable 'b'.

Factor out the Greatest Common Factor (GCF), '4'.
4(14 + 15b + 4b2) = 0

Factor a trinomial.
4((2 + b)(7 + 4b)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(2 + b)' equal to zero and attempt to solve: Simplifying 2 + b = 0 Solving 2 + b = 0 Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = 0 + -2 Combine like terms: 2 + -2 = 0 0 + b = 0 + -2 b = 0 + -2 Combine like terms: 0 + -2 = -2 b = -2 Simplifying b = -2

Subproblem 2

Set the factor '(7 + 4b)' equal to zero and attempt to solve: Simplifying 7 + 4b = 0 Solving 7 + 4b = 0 Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4b = 0 + -7 4b = 0 + -7 Combine like terms: 0 + -7 = -7 4b = -7 Divide each side by '4'. b = -1.75 Simplifying b = -1.75

Solution

b = {-2, -1.75}

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