no
0.5
-4
35
(4,1)
2x^2+3xy-4y2(4)+3(2)(-4)-(4)(-4)8-24+16=0
18x3y5 + 9xy3 - 3xy = 3xy(6x2y4 + 3y2 - 1)
3xy
no
No, it is not.
2(2)2 + 3(2)(- 4) - 4(- 4)2 8 - 24 - 64 = - 80 ======
-2
yes 3xy=6
3xy - 3xy = 0
(x + 6y)(x - 3y)
4
15x - 3xy = 3x(5 - y) 20 - 4y = 4(5 - y) 15x - 3xy + 20 - 4y = (3x + 4)(5 - y)