SOLUTION: Algebra 2: Please help me understand to solve these problems. Thank you! 1. Factor completely: 3x2 - 75 2. A car travels for 2½ hours and covers a distance of 125 miles.

Question 1133112: Algebra 2: Please help me understand to solve these problems. Thank you!
1. Factor completely: 3x2 - 75
2. A car travels for 2½ hours and covers a
distance of 125 miles. What was the
car’s average speed?
3. If f(x) = 2x - 3, g(x) = x2, and
h(x) = !3x, find (g f h )(2).
4. Factor: 15x2 + 7x - 36
5. Find the zeros of the polynomial
function f(x) = 15x2 + 7x - 36.
6. If g(x) = 5x + 6, find g -1(x) solved for y.

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

1. Factor completely:

2. A car travels for = hours and covers a distance of miles. What was the car’s average speed?

given:

3. If ,, and , find .=> I guess you have product here

if , we have

4. Factor:
..........write as
.....group

5. Find the zeros of the polynomial function .
=>
....use already factored form above

solutions:
if => =>
if => =>

6. If , find solved for.

..........since
..........swap and variables
.........solve for

=>

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