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OpenStudy (anonymous):
factor the following polynomial completely: x^4+4x^3+12x^2+36+27 a) (x-1)(x-3)(x-3i)(x+3i) b) (x+1)(x+3)(x-3i)(x+3i) c) (x-6)(x+6)(x-3i)(x+3i) d) (x-1)(x+3)(x-3)(x+3)
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OpenStudy (rsadhvika):
No sign changes in f(x), that means No positive real roots.
OpenStudy (rsadhvika):
u can strike off a, c, d
OpenStudy (anonymous):
wow that was easy! hah thankss
OpenStudy (rsadhvika):
we just got lucky here :) yw !!
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