Posted by **ROCKY** on Tuesday, July 26, 2011 at 11:11pm.

completely factor the expression

150x^2-420xy+294y^2

- intermediate algebra -
**Reiny**, Wednesday, July 27, 2011 at 8:34am
= 6(25x^2 - 70xy + 49)

mmmhh, the first and last numbers are perfect squares, let's see now does the middle term work out, ahhh yes

= 6(5x - 7y)^2

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