Plz
factor 2x2 - 50 completely.
a) 2(x + 5)2
b) 2(x - 5)2
c) (x + 5)(x - 5)
d) 2(x + 5)(x - 5)
e) 2(x - 5)(x - 5)

which of the quadratics has a graph with x-intercepts of 5 and -1?
a) y = x2 - 4x - 5
b) y = x2 - 5x - 4
c) y = x2 + 4x - 5
d) y = 2x2 - 4x - 5
e) y = 2x3 - 4x - 5