Question

find the value of (x-3) (x+5) using appropriate identity​

Answer 1

Answer:

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Step-by-step explanation:

(x-3)(x+5)

= (x)^2 + (-3 + 5)x + (-3)(5)

= x^2 +2x - 15

Using identity [ (x +a) (x + b) = x^2 +(a+b)x + ab]