Simplify.

72a^5b^3/84a^4b^2

a. 2/9 ab
b. 2/3 a^2b
c. 2a^2/3b
d. 6/7ab

Which of the following expressions is equal to 2x^2+8

Prove that 16^4-2^13-4^5 is divisible by 11.

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis