find the product of the following using identity
(a + b)2= a2+2ab + b2 .
(a) (3x+9)2
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Answered by
2
Answer:
9x+54x+81
Step-by-step explanation:
i hope it's useful
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Answered by
1
Step-by-step explanation:
Using identity a2+2ab + b2
(3x+9)2= 3x^2 + 2(3x)(9) + 9^2
= 9x^2 +54x + 81
Using the identity again 9x^2 +54x + 81
= 3x^2 + 9^2 + 2(3x)(9)
= (3x+9) (3x+9)
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