14. determine if the statement is true or false.
justify your response.
the expressions (-x) and --xy have the
same value.

What is the size of the matrix resulting from

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Simply 8x squared + 5(7x squared- x) - 2x =