Question

Expand (x+ 5)(x − 3) by using

suitable identity.​

Answer 1

Answer:

x^2 + 2x - 15

Step-by-step explanation:

using identity : (x+a)(x+b) = x^2 + (a+b)x + ab

=x^2 + (5+(-3))x + 5 × (-3)

=x^2 + (5-3)x - 15

=x^2 + 2x -15

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