Question

9(2x-3y)2 – 12(2x-3y) (2x+3y) + 4(2x+3y)?
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Answer 1

Answer:

18x-27y-20x+30y+2x+3y+8x+12y

8x+8y

Answer 2

Answer:

44x-42y-48x²+108y²

Step-by-step explanation:

=18(2x-3y) - 12((2x)²-(3y)²) + 4(2x+3y)

=36x-54y-48x²+108y²+8x+12y

=44x-42y-48x²+108y²

=4x(11-12x)-6y(7-18y)