Given a = 2x ^ 2 + 3xy-2x-1, B = - x ^ 2 + XY-1, 1. Find the value of 3A + 6B 2. The value of 3A + 6B has nothing to do with X, and the value of y can be obtained

Given a = 2x ^ 2 + 3xy-2x-1, B = - x ^ 2 + XY-1, 1. Find the value of 3A + 6B 2. The value of 3A + 6B has nothing to do with X, and the value of y can be obtained

3A+6B
=3(2X^2+3XY-2X-1)+6(-X^2+XY-1)
=6x^2+9xy-6x-3-6x^2+6xy-6
=15xy-6x-9
=x(15y-6)-9
It has nothing to do with X
Then the coefficient before x = 0
15y-6=0
y=2/5