If x : y = 7 : 3, then the value of xy+y2x2−y2 is - IQ786

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If x : y = 7 : 3, then the value of xy+y2x2−y2 is

If x : y = 7 : 3, then the value of xy+y2x2−y2 is

3/4

5/6

3/7

6/8

Explanation

=xy=73=xy+y2x2−y2=(xy)+1(x2y2)−1=73+1(73)2−1=103×940=3/4