Factor by grouping.x2 + 8x + xy + 8y
A. (x - 8)(x - y)
B. (x + 8)(x + y)
C. (x + 8)(x - y)
D. (x - 8)(x + y)
Answer: B
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Find the cardinal number of the set.Given:n(A ? B ? C)= 165n(A ? B ? C)= 22n(A ? B)= 46n(A ? C)= 43n(B ? C)= 41n(A)= 111n(B)= 82n(C)= 80Find n(A' ? B ? C)
A. 18 B. 20 C. 21 D. 19
Apply the Power Rule and simplify the expression. Write the result with positive exponents only.(y-9)0
A. 0
B. -1
C. 1
D. 
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.(logam - logan) + 4logak
A. loga
B. logamk4n
C. loga
D. loga
Write the quadratic equation in standard form. Determine the values of a, b, and c.8x2 - 7x - 4 = -23x - 6
A. 8x2 + 16x + 2 = 0 a = 8, b = 16, c = 2 B. -8x2 - 16x + 2 = 0 a = -8, b = -16, c = 2 C. 0 = -8x2 - 16x - 2 a = -8, b = -16, c = -2 D. 0 = 8x2 + 16x - 2 a = 8, b = 16, c = -2