Question 76

Which of the following is correct?

Solution

Expression : (3x + 4y)(4x - 3y) = $$12x^{2}+7xy-12y^{2}$$

=> L.H.S. = $$(3x + 4y)(4x - 3y)$$

= $$12x^2 (-9xy + 16xy) - 12y^2$$

= $$12x^2 + 7xy - 12y^2$$

=> Ans - (A)

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