Answer:

Step-by-step explanation:
Given:

The best way to write a polynomial with three terms as a product of binomials is to FACTOR!
The middle number is 3 and the last number is -4.
Factoring means we want something like

We need two numbers that...
ADD together to get 3 and
MULTIPLY together to get -4
Test the numbers -1 and 4:

These are the right numbers! Now, I can write them as factored binomials!

Answer:
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Step-by-step explanation:
Hope this helps!
Divide 159 by 39 to get around $4.08
Answer:
x = 19.42
Step-by-step explanation:
8²+x²=21²
64+x²=441
-64 -64
x²=377
x=19.41648784
rounded is 19.42