Question

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Answer 1

Answer:

${x - 7}^{2} \\ {x}^{2} + {7}^{2} - 2 \times x \times 7 \\ {x}^{2} + 49 - 14x$

Step-by-step explanation:

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Answer 2

hope it will help you

Q1 (ii) (x-7)^2

= (x)^2 -- (7)^2 + 2(x)(7)

(....by using identity (a-b)^2 = a^2 - b ^2 + 2ab

= x^2 - 49 + 14x

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