(5+ V7)(2+V5)simplify the question
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Answer:
(5+7v)(2+5v)
=10+25v+14v+35v²
=35v²+39v+10
=35v²+(25+14)v+10
=5v(7v+5)+2(7v+5)
=> 5v+2=0 or 7v+5=0
=> v=(-2/5) or v=(-5/7)
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