Question

Please help me solve (x+3) (x+7)

Answer 1

Step-by-step explanation:

Here, we'll need to multiply these two values together.  I'll use the expansion formula, which goes as follows:

$(a+b)(c+d)$

• Expand

$ac + ad + bc + bd$

Lets apply this to the following equation:

$(x+3) (x+7)$

• Expand.

$(x*x) + (x * 7) + (3 * x) + (3 * 7)$

• Simplify.

$(x^2) + (7x) + (3x) + (21)$

• Remove parenthesis and add.

$x^2+10x+21$

Answer:

x^2+10x+21