Test Mode
Reading Mode
Right = 0
Wrong = 0
(a+b+1) (a-b+1)
(a+b+1)(a+b-1)
(a+b+1) (a+b+2)
(a+b-1)(a-b+1)
(x + 6)(x - 7)
(x - 6)(x - 7)
(x + 6)(x + 7)
(x + 6)(x + 7)
(y + 3)(y - 2)
(y - 3)(y + 2)
(y + 6)(y - 1)
(y - 6)(y + 1)