SOLUTION: factor the expression -28y2power +7t2power

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Question 295398: factor the expression -28y2power +7t2power
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
-28y^2+7t^2
-7(4y^2-t^2)
-7(2y+t)(2y-t) ans.