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OpenStudy (anonymous):
Use the “difference of squares” rule to factor the following expression:25-9z^2 A.(5-3z)(5-3z) B.-(3z-5) c.25(1-9y^2) D.(5-3z)(5+3z)
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OpenStudy (anonymous):
D IS THE COORECT ANSWER
jimthompson5910 (jim_thompson5910):
25-9z^2 = (5-3z)(5+3z) by the difference of squares rule
OpenStudy (anonymous):
CHECK (5-3z)(3+3z) =25+3z-3z-9z^2 =25-9z^2
OpenStudy (anonymous):
so its c
jimthompson5910 (jim_thompson5910):
D
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OpenStudy (anonymous):
k
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