find the folloing by using identity 2 [7x/4-2y/3].
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Answer:
49/16x²+4/9y²-7/3xy
Step-by-step explanation:
= (7/4x(-2y/3)² bracket open
= (7/4x+2y/3)²
= (7/4x)²+(2y/3)²-2x(7/4x)*(-2/3y)²
= 49/16x²+4/9y²-7/3xy
hence the answer is confirmed right.
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