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OpenStudy (anonymous):
Simplify the following expression. (5p + 7q)(-2p + 7q) -10p2 + 21pq + 49q2 -10p2 + 49q2 -10p2 + 49pq + 49q2 3p + 14q
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OpenStudy (anonymous):
You can do this by multiplying each term from the first set of brackets, through the second set, one at a time: \[(a+b)(c+d)=ac+ad+bc+cd\]and then simplify by grouping like terms.
OpenStudy (anonymous):
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