Question

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

Answer 1

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