(2b-5)(b-4)=

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Solution for (2b-5)(b-4)= equation:


Simplifying
(2b + -5)(b + -4) = 0

Reorder the terms:
(-5 + 2b)(b + -4) = 0

Reorder the terms:
(-5 + 2b)(-4 + b) = 0

Multiply (-5 + 2b) * (-4 + b)
(-5(-4 + b) + 2b * (-4 + b)) = 0
((-4 * -5 + b * -5) + 2b * (-4 + b)) = 0
((20 + -5b) + 2b * (-4 + b)) = 0
(20 + -5b + (-4 * 2b + b * 2b)) = 0
(20 + -5b + (-8b + 2b2)) = 0

Combine like terms: -5b + -8b = -13b
(20 + -13b + 2b2) = 0

Solving
20 + -13b + 2b2 = 0

Solving for variable 'b'.

Factor a trinomial.
(5 + -2b)(4 + -1b) = 0

Subproblem 1

Set the factor '(5 + -2b)' equal to zero and attempt to solve: Simplifying 5 + -2b = 0 Solving 5 + -2b = 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 + -2b = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2b = 0 + -5 -2b = 0 + -5 Combine like terms: 0 + -5 = -5 -2b = -5 Divide each side by '-2'. b = 2.5 Simplifying b = 2.5

Subproblem 2

Set the factor '(4 + -1b)' equal to zero and attempt to solve: Simplifying 4 + -1b = 0 Solving 4 + -1b = 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 + -1b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1b = 0 + -4 -1b = 0 + -4 Combine like terms: 0 + -4 = -4 -1b = -4 Divide each side by '-1'. b = 4 Simplifying b = 4

Solution

b = {2.5, 4}

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