completely factor the expression
150x^2-420xy+294y^2
= 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
150x^2-420xy+294y^2
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