Question

Use the identity (x+a) (x+b) = x² + (a+b)x + ab to find the following product.
(x+3)(x+7)
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Answer 1

Answer:

Here by using this formula,

x is x itself

a=3 and b=7

Step-by-step explanation:

Then the answer by putting the values is

$(x + 3)(x + 7) \\ = {x}^{2} + (3 + 7)x + 3 \times 7 \\ = {x}^{2} + 10x + 21$

Here is your answer

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