Solve the equation.3(x + 4) = 4(x - 6)
A. {4}
B. {-12}
C. {-36}
D. {36}
Answer: D
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Find all the second order partial derivatives of the given function.f(x, y) = 
A. 
= - 
; 
= 
; 
= 
= 
B. 
= - 
; 
= 
; 
= 
= 
C. 
= - 
; 
= 
; 
= 
= 
D. 
= 
; 
= - 
; 
= 
= 
Expand and simplify the given expression by use of the binomial formula.(xy - z)5
A. x5y5 - z5 B. x5y5 + 5x4y4z + 10x3y3z2 + 10x2y2z3 + 5xyz4 + z5 C. -x5y5 + 5x4y4z - 10x3y3z2 + 10x2y2z3 - 5xyz4 + z5 D. x5y5 - 5x4y4z + 10x3y3z2 - 10x2y2z3 + 5xyz4 - z5
Determine whether the function is a solution of the wave equation.w(x, t) = ln -6cxt
A. Yes B. No
Find the standard form of the equation of a circle that satisfies the given conditions.Center (5, 6) and touches the y-axis
A. (x - 6)2 + (y - 5)2 = 25 B. (x - 6)2 + (y - 5)2 = 5 C. (x - 5)2 + (y - 6)2 = 25 D. (x - 5)2 + (y - 6)2 = 5