Anonym
Anonym
14-01-2015
Mathematics
Answered
factor the expression
5x^2 -22x -15
Answer :
Аноним
Аноним
14-01-2015
[tex]5x^2-22x-15=5x^2\underbrace{-25x+3x}_{-22x}-15\\\\=(5x^2-25x)+(3x-15)=5x(x-5)+3(x-5)\\\\=\boxed{(x-5)(5x+3)}[/tex]
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