2
6 - y + 5y - 6y = 6 - 2y
5x+2x-3y+y = (5+2)x+(-3+1)y = 7x - 2y
you can't simplify that anymore, you have to know what either x or y equals
4a2 + 4ab - y2 + b2 You cannot simplify this expression because it does not contain like terms, but you can factor it such as: 4a2 + 4ab - y2 + b2 = (4a2 + 4ab + b2) - y2 = (2a + b)2 - y2 = [(2a + b) - y][(2a + b) + y]
6y
3y+2z
The answer is 5x+3y. (5 xs and 3 ys)
22 + y
2
2
y-5x
3(x+y)
6 - y + 5y - 6y = 6 - 2y
5x+2x-3y+y = (5+2)x+(-3+1)y = 7x - 2y
It is the same as 8y+8z
Factor out the 4. The answer is y-3/y+3