Question

Use the suitable identity to get ach oth following products:

(ii)(b-7)²
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Answer 1

Answer with Explanation:

  (b-7)²

= b² - (2 x b x 7) + 7²

= b² - 14b + 4

Therefore, your answer is b² - 14b + 4.

I am really sorry if this was not the identity you asked because I am still learning the basics.

Hope this helps...

Answer 2

Answer:

b=7

Step-by-step explanation:

identify is a²+b²-2ab

therefore by using the identity

=b²+7²-2(b)(7)

=b²+49-14b

=b²-14b+49

(splitting the middle term)

b²-7b-7b+49

b(b-7) -7(b-7)

b-7,b-7

b=7

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