Question

Algebra Add it in horizontal method.
those who I have mark it with green.
those who will give all answer then I will mark you as Brainleist and follow you. ​

Answer 1

Step-by-step explanation:

iii) x²-y²-1+ y²-1-x²+ 1-x²-y²

= -x²-y²-1

iv) 4x²y-xy+5x+3xy²-4xy-2x+y

= 4x²y+ 3xy²-5xy+3x+y