SOLUTION: what is the product of (7x+1/2) and (-10x-22)? i have gotten -70x squared -11 but my teacher told me that was incorrect and i dont know what im doing wrong.
Question 657397: what is the product of (7x+1/2) and (-10x-22)? i have gotten -70x squared -11 but my teacher told me that was incorrect and i dont know what im doing wrong. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! The rule is:
( a + b ) x ( c + d ) = ac + bc + ad + bd
You got the ac and the bd, but you
left out the bc and ad
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You can check by plugging in some value for x
I'll say
and, also
OK
