Question

What is the answer to this problem (x+3)(x+5)

Answer 1

X²+15 x multiplied by x equals x² and 3 multiplied by 5 equals 15 and there's only a plus sign thus x² +15

Answer 2

Easy, showing work,

using the method FOIL (First,Outer,Inner, Last)

Take, (x+3)(x+5) and multiply,

First,

x*x=$x^{2}$

Outer,

x*5=5x

Inner,

3*x=3x

Last,

3*5=15

Add the terms together,

$x^{2}$+8x+15   ($x^{2}$+5x+3x+15)

Thus, your answer.