Question

Find the product.

(j + 7)(j – 7)

a. j2 – 49

b. j2 + 14j – 49

c. j2 + 14j – 49

d. j2 – 14j – 49

Answer 1

j2 – 49

Answer 2

j(j-7) 7(j-7)
j2-7j+7j-49
j2-49 ans.

Answer 3

@FutureMathProfessor Stop giving direct answers.

Answer 4

You want to do the FOIL method.

Answer 5

use the FOIL method*

Answer 6

To solve these you can use the FOIL method

Answer 7

or you could just use:\[(a+b)(a-b)~~~\implies~~~a^2-b^2\]

Answer 8

If you don't know the FOIL method, then click here: http://www.mathsisfun.com/definitions/foil-method.html

Answer 9

spelled it wrong too lol

Answer 10

\[ a^2 - b^2 \] would be the fastest and best approach to these types