I want check my answer ()()()

[r-soy]

I want check my answer ()()()

 

[HallsofIvy]

For 59 you have "- x³" when you should be subtracting the square.

For 60 you have "$\sqrt{x}+ \sqrt{x}+ \sqrt{x}$" for "add three times the square root". That will work but should be written more simply as "$3\sqrt{x}$".

The others are correct.

 

[r-soy]

my dear

#59 what is wrong ?

# 60
F(x) = -8xccube + 3square root of 3

now is ok?

 

[Mark44]

#59 what is wrong ?

# 60
F(x) = -8xccube + 3square root of 3

now is ok?

#59 "subtracts the square of the domain element", not the cube of it, as you have.
#60 Correct. F(x) = -8x³ + 3$\sqrt{3}$

 

[Mentallic]

In #59 the question says "...then subtract the square of the domain element..." (maybe the underline is the key here )
But you have subtracted the cube.
the square ---> x²
the cube ----> x³

See the dilemma?

For #60 yes that is ok now.

 

[r-soy]

thanks very much for helping me