find the product using suitable identity (x-7) (X+7)
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Answered by
5
Answer:
x²+7²
Step-by-step explanation:
(x-7) (x+ 7)
(a-b)(a+b) = a² + b²
a=x b= 7
x²+7²
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Answered by
1
(x + 7)(x + 7) ∵ (x + a)(x + b) =
x2 + (a + b)x + ab ∴
(x + 7)(x + 7) =
x2 + (7 + 7)x + 7 x 7 =
x2 + 14x + 49
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