9514 1404 393
Answer:
20x^26
Explanation:
The leading term is the one with the highest degree.
In the expansion of (x-2)^15, that will be x^15.
In the expansion of (4-x)^11, that will be (-x)^11 = -x^11.
So, the leading term of the product is ...
(-20)(x^15)(-x^11) = 20x^26
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In the attached, terms are listed in order of increasing degree, so the "leading" term appears last.