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The method of finding the new equation is said to be a transformation. Study of the transformed equation may throw some light on the nature of roots of the original equation. ... Use Descartes’ Rule of signs to both the equations to find the exact number of real and complex roots of the given equation. » Let f(x)= x4+3x2+8x+3=(x+1)4-4(x+1)3 ... ................
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