Question

(11x2 + 17xy - 4y2 ) - ( 6x2 - 4xy - 9y2 )

Answer 1

Answer:

-4+13xy-y10

Step-by-step explanation:

=[11*2+17xy-4y2] - [6*2-4xy-9y2]

=[8+17xy-4y2} - {12-4xy-y2}

=8+17xy-4y2-12-4xy-y2

=8-12+17xy-4xy-4y2-y2

=-4+13xy-y2*4-y2

=-4+13xy-y8-y2

=-4+13xy-y10