Question 1202118
For x∈[−11,12] the function f is defined by
f(x)=x4(x−4)7
On which two intervals is the function increasing?
 to and to 

Find the region in which the function is positive: 
 to Where does the function achieve its minimum? 
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Not clear.
is x4 a different variable?  or x to the 4th power?
use ^ (Shift 6) for exponents, eg, x^4.
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Same for the 7.  Is it an exponent?  or a multiplier?
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Look at how things are done, and repost.