Factor the polynomial by removing any common monomial factor.4x4 - 28x2

A. 4(x4 - 7x)
B. 4x2(x2 - 7)
C. 28x2(x2 - 1)
D. 4x2(x2 - 28)


Answer: B

Mathematics

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B.
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A. - 
B. - 
C.
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Verify the identity. = cos x + cot x

What will be an ideal response?

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