If one factor of b³ + 125 is b + 5, what is the other factor?
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If one factor of b³ + 125 is b + 5, what is the other factor?
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Answer:
C
Step-by-step explanation:
solution
factor
b³+125
rewrite the expression into the form of
a³+b³
b³+5³
Factor the expression using
a³±b³=(a±b)(a²+ab+b²)
(b+5)(b²–b×5+5²)
=b²–5b+25