You can put this solution on YOUR website! Use the FOIL method:First*First+Outer*Outer+Inner*Inner+Last*Last
in this case x is the first term of the first binomial and 5x is the first term in the second binomial.
(x*5x)
+
x is the outermost term in the first binomial and (-9y) is the outermost term in the second binomial
(x*-9y)
+
(-4y) is the innermost term in the first binomial and 5x is the innermost term of the second binomial. So,
(-4y*5x)
+
-4y is the last term in the first binomial and -9y is the last term in the second binomial. So,
(-4y*-9y)
.
or
combine like terms and you get your final answer:
.
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