Factor completely.5x3 + 10x2 - 40x

A. (x - 2)(5x2 + 20)
B. (5x2 + 10x)(x - 4)
C. 5x(x - 2)(x + 4)
D. 5x(x + 2)(x - 4)


Answer: C

Mathematics

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Rewrite the sum using sigma notation. -  +  -   +   -  

A.
B.
C.
D.

Mathematics

Use the Factor Theorem to determine whether x - c is a factor of f. If it is, write f in factored form, that is, write f in the form f(x) = 5x4 - 7x3 + 17x2 - 21x + 6; c = 1

A. Yes; f(x) = (x - 1)(5x3 + 3x2 + 15x - 6) B. Yes; f(x) = (x - 1)(5x3 - 2x2 - 16x - 6) C. No D. Yes; f(x) = (x - 1)(5x3 - 2x2 + 15x - 6)

Mathematics

Multiply using the rule for finding the product of the sum and difference of two terms.(x2 + 5)(x2 - 5)

A. x4 - 10 B. x4 - 10x2 - 25 C. x4 - 25 D. x4 + 10x2 - 25

Mathematics

Solve by completing the square.a2 + 2a - 15 = 0

A. -35
B. 3-5
C. ±
D. -10, -5

Mathematics