Question

Using the identity (x + a) (x + b) = x² + (a+b) x + ab, the product of (x + 4) (x + 7) is
1) X² + 11x - 28
2) X² + 11x + 28
3) X² - 28
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Answer 1

Step-by-step explanation:

(x + 4) (x + 7) is x²+11x+28