Question 165
Find the maximum value of $y = (7 - x)^{4} (2 + x)^{5}$ when $x$ lies strictly between $-2$ and $7$.
(a) $7^{4} 2^{5}$
(b) $(4.5)^{4} (2.5)^{5}$
(c) $(2.5)^{9}$
(d) $(4.5)^{9}$
(a) $7^{4} 2^{5}$
(b) $(4.5)^{4} (2.5)^{5}$
(c) $(2.5)^{9}$
(d) $(4.5)^{9}$