Factor by grouping.xy + 9x + 5y + 45
A. (x + 5)(y - 9)
B. (x - 9)(y + 5)
C. (x - 9)(y - 5)
D. (x + 5)(y + 9)
Answer: D
Mathematics
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Find the vertex of the parabola.f(x) = -4x2 - 8x - 8
A. (-1, -4) B. (4, 1) C. (1, 4) D. (-4, -1)
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Divide using synthetic division.(5r3 - 6r2 - 19r - 24) ÷ (r - 3)
A. 5r2 - 9r - 8
B. 5r2 + 9r + 8
C. 5r2 + 9r + 
D. r2 + 8r + 9
Mathematics
Solve the linear equation.5 - 5x = 9x - 7x - 16
A. -3 B. -21 C. -11 D. 3
Mathematics
Divide.
÷ 
A. 
B. - 
C. - 
D. 
Mathematics