Question

0.7 Find the product of (x+4)*(x+9)​

Answer 1

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$= (x + 4)(x + 9) \\ \\ = x(x + 9) + 4(x + 9) \\ \\ = {x}^{2} + 9x + 4x + 36 \\ \\ {x}^{2} + 13x + 36$

Answer 2

Step-by-step explanation:

x.x+x+9+x+4+4+9

x2+9x2+17