Recall that the product (a + b)(a - b) is the difference of squares, a2 – b2.
Examine this same product for radical expressions
Choose the product of (3+17)(3-17)
A. 6-3√7 +3√7 -√14
B. 9-√21 +√21 -√49
C. 9-3√7 +3√7 -√49

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

i would you but i don't under stand the qustion

step-by-step explanation: