Multiply.(5x - y + 2z)(5x - y - 2z)
A. 25x2 + y2 - 4z2
B. 25x2 + y2 + 20xz + 4yz - 4z2
C. 25x2 - 10xy + y2 - 4z2
D. 25x2 - 10xy + y2 + 20xz + 4yz - 4z2
Answer: C
You might also like to view...
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(1, 1)}
B. infinitely many solutions; {
x + y = 6} or {
x = -y}
C. {(1, 5)}
D. no solution; ?
Provide an appropriate response.Solve the following quadratic equation: 5x2 + 4x = 1
Fill in the blank(s) with the appropriate word(s).
Solve the rational inequality and graph the solution set on a real number line. Express the solution set in interval notation.
? 0
A. 
or [5, ?)
B. [5, ?)
C. 
or [5, ?)
D. 
Given the matrices A and B, find the matrix product AB.A = 
, B = 
Find AB.
A. AB is not defined.
B. 
C. 
D. 