Question

multiply (a+5) by (a+4)​

Answer 1

Step-by-step explanation:

(a+5)(a+4)

a(a+4)+5(a+4)

a²+4a+5a+20

a²+9a+20

hope it helps

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Answer 2

Answer:

a²+9a+20

Step-by-step explanation:

By splitting, we get

a(a+4) + 5(a+4)

or a²+4a+5a+20

or a²+9a+20

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