Question

use identity and find (b-7)²​

Answer 1

Answer:

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Step-by-step explanation:

(b-7)²

by using the identity (a-b)² = a²- 2ab + (b)² we get,

(b-7)²

=(b)² -2×7×b +(7)²

=(b)² -2×7×b +(7)²=b²-14b + 49

may be this is the correct answer

Answer 2

Answer:

b^2 + 14b - 49

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Step-by-step explanation:

(b-7)^2

identity

(a-b)^2

=a^2+ 2ab - b^2

b^2 + 14b - 49

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