Solve it: A³+3A²+2A-120=0 by synthetic method
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- How to find zeroes of polynomials, or solve polynomial equations. ... The methods given here—find a rational root and use synthetic ... sum of cubes: A³ + B³ = (A + B)(A² − AB + B²); difference of cubes: A³ − B³ = (A − B)(A² + AB ...
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