Given that (x = -frac{1}{2}and hspace{1mm} y = 4 hspace{1mm} evaluate hspace{1mm} 3x^2y+xy^2)
-
A.
-5 -
B.
-1 -
C.
4 -
D.
11
Correct Answer: Option A
Explanation
(x = -frac{1}{2}, y = 4\
3x^2y + xy^2\
3left[-frac{1}{2}right]^2 times 4 times + left(frac{-1}{2}right)(4)^2\
3times frac{1}{4} times 4 -frac{1}{2} times 16\
3-8 = -5)