Solve the polynomial inequality and graph the solution set on a number line.x3 + 2x2 - 10x + 25 ? 0
A. (-?, -5] ? [5, ?)
B. [-5, ?)
C. (-?, -5] ? [-3, 5]
D. (-?, -5]
Answer: D
Mathematics
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Find the least common denominator of the rational expressions.
and 
A. 20(x - 1)(x + 1) B. 4(x - 1)2(x + 1) C. 20(x - 1)2(x + 1) D. 80(x - 1)2(x + 1)
Mathematics
Rewrite the expression as a sum, difference, or multiple of logarithms.log x2(5x - 4)5
A. 2 log x - 5 log(5x - 4) B. 2 log x + 5 log(5x - 4) C. 7 log(6x - 4) D. 2 log x + 5 log 5x - 5 log 4
Mathematics
Solve the equation.-8x - 5 - 7 = -7(x - 1)
A. {5} B. {19} C. {- 19} D. {11}
Mathematics
Solve the system of equations by finding the reduced row echelon form for the augmented matrix. x + y - 2z = 83x+ z = - 6
A. 
B. 
C. 
D. 
Mathematics