X² – 8x - 20
Factor the quadratic completely

(x+-10)(x+2)

Step-by-step explanation:

Whenever there is a x²

we can always start off with

(x+_)(x+_)

then we take the rest of the eqn – 8x - 20

the b value is what be always add to and the c value is what we factor. So what factor pair of 20 adds to -8?

its -10 & 2 because its =20 and when you add it together its -8

Then you plug it in:

(x+_)(x+_)

(x+-10)(x+2)

i think it is 70

step-by-step explanation:

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4