(4a + 9)^2 expansion
(16a^2 + 81 + 72a)
using (a+b)^2
Answers
Answered by
4
Answer:
it's quite simple,
( 4a + 9 )²
= [ ( 4a )² + ( 9 )² + 2.4a.9 ]
= ( 16a² + 81 + 72a )
therefore using the appropriate expansion identity that is ( a + b )²
( a² + b² + 2ab )
hope it may helpful to you!!
Answered by
1
Answer:
16a²+81+72a
Step-by-step explanation:
a+b)²=a²+b²+2ab
(4a+9²)=16a+81+(2×4a×9)
=16a²+81+72a
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