Factor x2 - 3x - 40. A)
(x - 5)(X + 8)
B)
(x - 3)(x + 5)
(x - 20)(x + 2)
D)
(x - 2)(x + 20)

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

Documentation and time management