Bleck3
Write a linear factorization of the function.
f(x) = x4+ 9x2
f(x) = x2(x + 3i)(x  3i)
f(x) = x2(x + 3i)2
f(x) = x2(3x + i)(3x  i)
f(x) = x2(3x + i)



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Bleck3
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f(x) = x2(3x + i)^2

inkyvoyd
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Here's a hint:
(a^2+b^2)=(a+bi)(abi)
hint hint.

Bleck3
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(3x+i)(3xi)

inkyvoyd
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Nope.

inkyvoyd
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Lemme rewrite it.
\(\Huge (x^{2})^{2}+(3x)^2\)
hinty hint.

Bleck3
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i dont understand @inkyvoyd how can you get an answer i think its f(x) = x2(3x + i)(3x  i)

Bleck3
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f(x) = x2(x + 3i)2 i think this @inkyvoyd

inkyvoyd
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Well
\(\Huge (x^{2})^{2}+(3x)^2\)
\(\huge\text{a=}x^2\text{b=}3x\)

inkyvoyd
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\(\Huge a^2+b^2=(a+bi)(abi)\)

Bleck3
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f(x) = x2(x + 3i)(x  3i) ohhhhhhhhhhh @inkyvoyd lol

inkyvoyd
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Yup.