Select the product of (7x - 2)(7x + 7).
(7x-2)(7x+7)=(7x)²+49x-14x-14=7²x²+35x-14=49x²+35x-14
(7x - 2)(7x + 7)= 7x 7x + 7x 7 - 2 7x - 2 7= 49x² + 49x - 14x - 14= 49x² + 35x - 14