| Select all expressions that could be equivalent to x2 + bx - 36 where bis negative. (x + 3)(2 – 12)
b
с
(x - 2)(x+18)
(x – 13)(x – 3)
(2 + 4)(2 +9)
(2 – 9)(x+4)
d
e

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.