Question 40

Which of the following is correct?

Solution

Expression : $$(3x-2y)^2$$

= $$(3x)^2+(-2y)^2+2(3x)(-2y)$$

= $$9x^2+4y^2-12xy$$

=> $$(3x+2y)^2$$

= $$(3x)^2+(2y)^2+2(3x)(2y)$$

= $$9x^2+4y^2+12xy$$

=> Ans - (A)

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