Solve.5x(x - 2) - 15 = 4x(x - 3)
A. 5, -3
B. 3
C. -5, 3
D. -5
Answer: C
Mathematics
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Find the LCD of the given rational expressions.
; 
A. r(r + 1)(r + 4) B. (r + 4)2 C. r(r + 4)2 D. r(r + 4)
Mathematics
Solve the system by using Gaussian elimination with backward substitution or by reducing the matrix to reduced-row echelon form.-4x - 5y = -19-8x = -21 + 10y
A. (21, 51) B. (-4, 51) C. No solution D. (-4, 7)
Mathematics
Solve the equation by factoring.2x2 = -27x - 81
A. x = -9, -18
B. x = - 
, -9
C. x = 9, 
D. x = 9, - 
Mathematics
Match f(x) with its graph without using a calculator.f(x) = 
A. 
B. 
C. 
D. 
Mathematics