Find the products of the following using the identities.
a. (x + 2)(x + 6)
b. (4x + 7)(4x - 3)
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Step-by-step explanation:
- (x+2)(x+6)
(x+a)(x+b)= x^2+(a+b)x+ab
x^2+(2+6)x+6×2
x^2+8x+12
2. (4x+7)(4x-3)
(x+a)(x+(-b))= x^2+(a+b)x+ab
(4x)^2+(7+(-3))x+7×-3
16x^2+4x-21
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