If x - y = 4 and xy = 45, then the value of x3 - y3 is :
Answer & explanation
Correct answer: option 2
If x - y = 4
xy = 45
Then the value of x3 - y3
Put x = 9 and y = 5
x3 - y3 = 93 - 53
x3 - y3 = 729 - 125 = 604
If x - y = 4 and xy = 45, then the value of x3 - y3 is :
Correct answer: option 2
If x - y = 4
xy = 45
Then the value of x3 - y3
Put x = 9 and y = 5
x3 - y3 = 93 - 53
x3 - y3 = 729 - 125 = 604