(i) How much more than 2x^{2} + 4xy + 2y^{2} is 5x^{2} + 10xy – y^{2}^{ }?(ii) How much less 2a^{2} + 1 is than 3a^{2} – 6 ?
We have to subtract 5x^{2} + 10xy – y^{2 }and 2x^{2} + 4xy + 2y^{2}