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Question

The value of (3x2 + 5y2) (4xy-5y), if the value of x = 2 and y = 3, is 513.



Correct Answer
A

True

Your Answer
B

False


Solution

The correct option is A

True


(3x2+5y2) (4xy-5y)

 12x3y15x2y20xy3 - 25y3

12 (2)3 (3) - 15 (2)2 (3) + 20 (2) (3)3 - 25 (3)3

12 (8) (3) - 15 (4) (3) + 20 (2) (27) - 25 (27)

288 - 180 + 1080 - 675 = 513

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