Question

Subtract -4a^2-2ab+9b^2 from 7a^2-3ab+5b^2

Answer 1

`{7a}^(2) - 3ab + {5b}^(2) - ( - {4a}^(2) - 2ab + {9b}^(2)) \\ = {7a}^(2) - 3ab + {5b}^(2) + {4a}^(2) + 2ab + - {9b}^(2)) \\ = {7a}^(2) + {4a}^(2) - 3ab + 2ab + {5b}^(2) - {9b}^(2)) \\ = {11a}^(2) - ab - {4b}^(2)`

Answer:

`{11a}^(2) - ab - {4b}^(2)`

Hope you could understand.

If you have any query, feel free to ask