Expand the following using suitable identity: (b-7)^2
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Answered by
13
Answer:
b
Step-by-step explanation:
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Answered by
21
Answer:
expand (b-7)^2
Step-by-step explanation:
according to (a-b)^2=a^2-2ab+b^2
(b-7)^2=b^2-2b7+7^2
=b^2-14b+49
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