1.

Write the following cubes in expanded from:[x-2\3y]^2​

Answer»

ANSWER:

We KNOW (a-b)²=a²+b²-2ab

so, [X-2/3y]²=(x)²+(2/3y)² - 2*x*2/3y

=x² + 4/9y² - 4x/3y



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