Question

find the product using appropriate identities :

(i) (x-7)(x-7)​

Answer 1

Answer:

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Step-by-step explanation:

x - 7 × x - 7

x² × 49

49x²

Answer 2

(x-7)(x-7) =(x-7)²

[(a-b)²=a²-2ab+b²]

here a= x and b=7

x²-2×x×7+7²

x²-14x+49