Factor the four-term polynomial by grouping.18x2 + 30xy - 15xy - 25y2
A. (18x - 5y)(x + 5y)
B. (6x - 5y)(3x + 5y)
C. (6x - 5)(3x + 5)
D. (6x + 5y)(3x + 5y)
Answer: B
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Find the domain of the given function f and find where it is increasing and decreasing, and also where it is concave upward and where it is concave downward. Identify all extreme values and points of inflection. Then sketch the graph of y = f(x). f(x) = e2.5x
What will be an ideal response?
Solve the system by the addition method.6x2 + y2 = 366x2 - y2 = 36
A. {(0, 
), (0, -
)}
B. {(6, 0), (-6, 0)}
C. {(0, 6), (0, -6)}
D. {(
, 0), (-
, 0)}
Solve the rational inequality. Express the solution in interval notation.
< 1
A. (-6, 1) B. (-?, -6) C. (-?, -6) ? (1, ?) D. (-6, ?)
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.7x2 - 5
A. Monomial; variable x; coefficient 7; degree 1 B. Monomial; variable x; coefficient 5 ; degree 2 C. Monomial; variable x; coefficient 7; degree 2 D. Not a monomial