to solve 3(2x+1) you need to multiply. so 3 times 2x is 6x and 3 times 1 is 3 making the final answer to be 6x+1
9514 1404 393
Answer:
10x -5 +5h
Step-by-step explanation:
Use the function definition with the given arguments.
Step-by-step explanation:
x^3 - 5x^2 - 4x + 20 (I'm assuming this is what you meant)
(1)^3 - 5(1)^2 - 4(1) + 20 = 1 - 5 - 4 + 20 = 12
(-1)^3 - 5(-1)^2 - 4(-1) + 20 = -1 - 5 + 4 + 20 = 18
(2)^3 - 5(2)^2 - 4(2) + 20 = 8 - 20 - 8 + 20 = 0
Now I know (x-2) is a factor of the polynomial.
Synthetic division
2 | 1. -5. -4. 20
| 2. -6. -20
-----------------------------
1. -3. -10. 0
x^2 -3x -10
Factor -> (x-5)(x+2)
So the factors of the original polynomial are (x-5), (x+2), and (x-2)
f(x) = 0 when x = -2,2,or 5
Answer:
1,200 kilometers (km)
Step-by-step explanation:
The scale of a map = 1:30000000
There are two cities that are 4 cm apart on the map
<u>
First: Find the distance between them</u>
Distance between them = 4 cm × 30,000,000 = 120,000,000 cm
<u>Second: Convert</u>
120,000,000 cm = 1,200 km
So distance between the cities is 1,200 km