Question

If A= 2x² - xy + 6 , B= 4x² - 3xy + 7 and C= x² + 2xy + 2 , find A-B+C ​

Answer 1

Answer:

Explanation:

A=2x²-xy+6

B=4x²-3xy+7

C=x²+2xy+2

Now A-B+C

2x²-xy+6-(4x²-3xy+7)+(x²+2xy+2)

=2x²-xy+6-4x²+3xy-7+x²+2xy+2

=2x²-4x²+x²-xy+3xy+2xy+6-7+2

=(2-4+1)x²+(-1+3+2)x+(6+2-7)

=-x²+4x+1.(answer)