Answer:
7(4 - x^2)
Step-by-step explanation:
Well you just factor out 7, since that is the GCF. 7(4 - x^2)
Hope this helps
Plug in 6 for x and solve out for f(x)
Answer:

Step-by-step explanation:
There aren't any factors that cancel (except 3x). The best you can do is multiply it out.

Unsure what you mean by diagonal right triangle
but if you wanted to find the hypothenuse (longest side) of a right triangle, you can apply pythagorean theorem

where c is the hypothenuse
a and b are the other sides
Answer:
15%
Step-by-step explanation:
100-85=15
100%= the total cost of the book
85%= price she bought it for
15%= the percentage the book was reduced by