Question

completely factor 2x2 − 8x − 42.

Answer 1

plz explain too

Answer 2

is that 2*2? or 2x2

Answer 3

2x^2

Answer 4

(2x + 6 )(x - 7 )

Answer 5

2x^2 - 8x - 42
factors of 2x^2 are 2x and x
(2x + __)(x - __)
factors of 42 (1*42, 2*21, 3*12, 6*7)
you could do the guess and check but
(2x + 6)(x - 7) are correct
if you re-factor you get 2x^2 - 12x + 6x - 42

Answer 6

remember to multiply by doing first, last, middle