Question

subtract the following and no spam allowed​

Answer 1

Required Answer:-

1) (-3x²+4xy-z)-(2xy+x²-3z)

=-3x²+4xy-z-2xy-x²+3z

=-3x²-x²+4xy-2xy-z+3z

=-4x²+2xy+2z

2) (7x-3y+45xy+7)-(2x-21y-42xy)

=7x-3y+45xy+7-2x+21y+42xy

=7x-2x-3y+21y+45xy+42xy+7

=5x+18y+87xy+7

3) (3y²-4y+9)-(2y²-3y-3)

=3y²-4y+9-2y²+3y+3

=3y²-2y²-4y+3y+9+3

=y²-y+12

4) (3a+2b)-(2a+b)

=3a+2b-2a-b

=a+b

5) (3a-11b)-(2a-9b)

=3a-11b-2a+9b

=a-2b

6) (5a-6b-2c)-(a+b+3c)

=5a-6b-2c-a-b-3c

=4a-7b-5c

7) (6a²-5b²-4c²)-(2b²+5c²-7a²)

=6a²-5b²-4c²-2b²-5c²+7a²

=6a²+7a²-5b²-2b²-4c²-5c²

=13a²-7b²-9c²

Answer 2

Answer:

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