42.6k views
18 votes
EXPAND THE POLONOMIAL

(5a+1/2b)^2 HELPPP ASAP

User Lari
by
7.7k points

1 Answer

4 votes

Answer:

25
a^(2)+5ab+
(b^(2) )/(4)

Explanation:


(5a+(1)/(2) b)^(2)

1. First, write out the expression without the square


(5a+(1)/(2) b)(5a+(1)/(2) b)

2. Then use foil to multiply:

5a*5a+5a*
(1)/(2)b+
(1)/(2)b*5a+
(1)/(2)b*
(1)/(2)b

=25
a^(2)+5ab+
(b^(2) )/(4)

3. That is your answer.

User Mojgan
by
7.7k points

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