Add (9a+16b) and (13a at 2b)
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Answer:
117a2+256b2
Step-by-step explanation:
(9a+16b) × (13a + 2b)
apply foil method/ happy method;
9a×13a= 117a squared (2)
16b×2b=256b squared(2)
=117a2+29ab+11ab+256b2
just moved out the same equation
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