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(3a +7)² – 5a(a-4) ..... Help​

(3a +7)² – 5a(a-4) ..... Help​
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1 vote
(3a +7)² – 5a(a-4) ..... Help​

User Raymond Roestenburg
by
8.1k points

1 Answer

6 votes

Answer:

4a²+62a+49

Explanation:

since (a+b)^2= a^2+2ab+b^2

(3a +7)² – 5a(a-4)

simplify the equation first

9a²+42a+49-5a²+20a

= 4a²+62a+49

User Cahn
by
8.6k points
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