Factor the expression completely, if possible.x4 - 81
A. (x2 - 9)(x + 3)(x - 3)
B. (x2 + 9)(x + 3)(x - 3)
C. (x + 3)2(x - 3)2
D. Does not factor
Answer: B
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Use the discriminant to determine the number and nature of the solutions to the quadratic equation. Do not solve the equation.x2 - 2x + 4 = 0
A. two nonreal solutions B. two real solutions C. exactly one real solution
Perform the indicated operations. [(13x9 + 13) - (- 9x7 + 9x3 )] - [(10x9 - 11x5 + 9x) + (10x3 - 9x- 5)]
A. -3x9 + 9x7 + 11x5 - 19x3 + 18 B. 3x9 + 9x7 + 11x5 - 19x3 + 18 C. 3x9 + 9x7 - 11x5 - 19x3 + 18 D. -3x9 + 9x7 - 11x5 - 19x3 + 18
Solve by the substitution method.0.15x + 0.03y = 0.125x + y = 4
A. {(0, 4)}
B. {(x, y)| 0.15x + 0.03y = 0.12}
C. ?
D. 
Answer the question.Let P be a polynomial function with a leading coefficient of 1 and having the following zeros: 3 (multiplicity 1), -1 (multiplicity 3), 8 (multiplicity 2), and -9 (multiplicity 4). State the degree of P and write P(x) in factored form.
A. Degree 4; P(x) = (x - 3)(x + 1)(x - 8)(x + 9) B. Degree 10; P(x) = (x + 3)(x - 1)3(x + 8)2(x - 9)4 C. Degree 10; P(x) = (x - 3)(x + 1)3(x - 8)2(x + 9)4 D. Degree 14; P(x) = (x - 3)2(x + 1)4(x - 9)3(x - 9)5