Question

(x-7) ² factorise using suitable identity. ​

Answer 1

Answer:

(x-7)²

x² + 7² - 2 × x × 7 (a² + b² - 2ab)

x² + 49 - 14x

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Answer 2

Answer:

Question:-

(x-7) ² factorise using suitable identity.

Answer:-

Using the identity,

(a-b)² = a²-2ab+b²

Here,

a= x

b= 7

(x-7)² = x² - 2×x×7 + 7²

= x² - 14x + 49.