Question

А Factouse : 98 (3x
-2y)^2 - 2(x+y)^2
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Answer 1

98 (3x-2y)^2 - 2(x+y)^2

= 2[49(3x-2y)2 - (x+y)2]

=2 {7(3x-2y)}^2 - (x+y)^2}

= 2{7(3x-2y+x+y}{7(3x-2y-x-y)}