factoring polynomials - 3 quick multiple choice questions, math homework help

Factor the polynomial.

3a3 – 2a2 - 5a + 9a2b – 6ab – 15b

(a + 3b)(3a + 1)(a + 5)(a - 5)

(a + 3b)(3a - 5)(a + 1)

(a + 3b)(3a + 1)(a - 5)

(a + 3b)(3a - 5)(a + 1)(a - 1)

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Write the expression in quadratic form, if possible.

a8 + 10a2 – 16

(a4)2 + 10(a2) – 16

(a2)2 + 10(a2) – 16

a2[(a2)2 + 10(a)] – 16

cannot be written in quadratic form

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Write the expression in quadratic form, if possible.

7b5 – 4b3 + 2b

7(b3)2 - 4(b3) + 2b

b[7(b2)2 - 4(b2) + 2]

7(b2)3 - 4(b)3 + 2(b)

cannot be written in quadratic form.

factoring polynomials – 3 quick multiple choice questions, math homework help