What is the completely factored form of 8x2 – 50? a. 2(x+5)(x-5), b. 2(2x-5)(2x-5), c. 2(2x+5)(2x+5), d. 2(2x+5)(2x-5)

Option D

Step-by-step explanation:

we have

we know that

Remember difference of squares

so

Applying difference of squares

i got 86 for this

hope this !

if you need an explanation just ask

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."