Answer:
=9a2+6ab+b2
Step-by-step explanation:
=(3a+b)(3a+b)
=(3a)(3a)+(3a)(b)+(b)(3a)+(b)(b)
=9a2+3ab+3ab+b2
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Answer:
=9a2+6ab+b2
Step-by-step explanation:
=(3a+b)(3a+b)
=(3a)(3a)+(3a)(b)+(b)(3a)+(b)(b)
=9a2+3ab+3ab+b2
=9a2+6ab+b2