Question

Simplify:
(i) 7x − 9y + 3 − 3x − 5y + 8;
(ii)$3x^{2} +5xy-4y^{2} +x^{2} -8xy-5y^{2}$

Answer 1

1=4x-14y+11
2=4x^2-9y^2-3xy

Answer 2

here is your answer in attachment


hope it help you