Math
posted by Ms.Ellis .
Multiply:
(7x2)(2x7)

Hint: use FOIL.
Here is an example to help you.
(x + 2)(3x  4)
FIRST terms multiplied: x•3x = 3x^2
OUTER terms multiplied: x(4) = 4x
INNER terms multiplied: 2•3x = 6x
LAST terms multiplied: 2(4) = 8
Add them up: 3x^2  4x + 6x  8 = 3x^2 + 2x  8