Question 82 (ii)
Subtract
6x2−4xy+5y2 from 8y2+6xy−3x2
We have, 6x2−4xy+5y2 and 8y2+6xy−3x2 The required difference is given by (8y2+6xy−3x2)−(6x2−4xy+5y2) =8y2+6xy−3x2−6x2+4xy−5y2 =(8y2−5y2)+(6xy+4xy)−(3x2+6x2)=3y2+10xy−9x2