Question

(x+4) (x+9) find the product
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Answer 1

Answer:

x(x+9)+4(x+9)

xsq+9x+4x+36

xsq +13x+36

Answer 2

Identity : (x + a) (x+b) = x^2 + (a+b)x + ab

In the question, a = 4 and b = 9

(x + 4)(x + 9) = x^2 + (4+9)x + (4)(9)

= x^2 + 13x + 36

Therefore the product is x^2 + 13x + 36.