Subject :IMO Class : Class 7
There are 6xy – 4x2 – y2 + 5 marbles in a box. If
Ranjana takes x2 – 3xy + 7y2 – 2 marbles, then how many marbles are left?
A–5x2 – 8y2 + 9xy + 7
B6x2 – 8y2 + 9xy – 17
C–15x2 – 8y2 + 19xy – 8
D5x2 + 8y2 – 9xy – 7