Question

Please answer these with solutions.
Please
Please
Please
No unnecessary answers otherwise I will report your answer.​

Answer 1

Answer:

a) 2x+5y-4 from x+6y+12

=2x+5y-4-(x+6y+12)

= 2x+5y-4-x+6y+12

= 2x-x+5y+6y-4+12

=x+11y+8

b) x^2-y^2-xy from 1+x^2+y^2

x^2-y^2-xy-(1+x^2+y^2)

=x^2-y^2-xy-1+x^2+y^2)

=x^2+x^2-y^2+y^2-xy-1

=2x^2-2y^2-1xy