(250=443.5)(220=x)(190=468)
9*xyz*4xy
p(5,7) and Q(6,2)
520 million divided by 1.5 million
450a^2 +242c^2 + 660ac
5x-y=4
(6x + 6) + (-2-4)
-3+-7
o
128x^2 +96xy + 18y^2