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Simplifying (b + 7) + (3b + -3)(b + -6) = 0 Reorder the terms: (7 + b) + (3b + -3)(b + -6) = 0 Remove parenthesis around (7 + b) 7 + b + (3b + -3)(b + -6) = 0 Reorder the terms: 7 + b + (-3 + 3b)(b + -6) = 0 Reorder the terms: 7 + b + (-3 + 3b)(-6 + b) = 0 Multiply (-3 + 3b) * (-6 + b) 7 + b + (-3(-6 + b) + 3b * (-6 + b)) = 0 7 + b + ((-6 * -3 + b * -3) + 3b * (-6 + b)) = 0 7 + b + ((18 + -3b) + 3b * (-6 + b)) = 0 7 + b + (18 + -3b + (-6 * 3b + b * 3b)) = 0 7 + b + (18 + -3b + (-18b + 3b2)) = 0 Combine like terms: -3b + -18b = -21b 7 + b + (18 + -21b + 3b2) = 0 Reorder the terms: 7 + 18 + b + -21b + 3b2 = 0 Combine like terms: 7 + 18 = 25 25 + b + -21b + 3b2 = 0 Combine like terms: b + -21b = -20b 25 + -20b + 3b2 = 0 Solving 25 + -20b + 3b2 = 0 Solving for variable 'b'. Factor a trinomial. (5 + -3b)(5 + -1b) = 0Subproblem 1
Set the factor '(5 + -3b)' equal to zero and attempt to solve: Simplifying 5 + -3b = 0 Solving 5 + -3b = 0 Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -3b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3b = 0 + -5 -3b = 0 + -5 Combine like terms: 0 + -5 = -5 -3b = -5 Divide each side by '-3'. b = 1.666666667 Simplifying b = 1.666666667Subproblem 2
Set the factor '(5 + -1b)' equal to zero and attempt to solve: Simplifying 5 + -1b = 0 Solving 5 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1b = 0 + -5 -1b = 0 + -5 Combine like terms: 0 + -5 = -5 -1b = -5 Divide each side by '-1'. b = 5 Simplifying b = 5Solution
b = {1.666666667, 5}
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