Answer:
Not equivalent
Step-by-step explanation:
Distribute the negative in the parentheses. It basically multiplying everything inside by -1.

add like terms

Not equivalent since the 6x is positive
Car 1 consumes 30 gallons of gas.Car 2 consumes 20 gallons of gas.
x+7
------------------- =
x^2+4x -21
x+7
= -------------------
(x+7)(x-3)
1
= ---------- where x is not equal -7 and 3
x - 3
answer is A. first choice
Answer:
√14 and √42. hope this helps.