Asked by lee
Could someone please explain the steps in finding all the zeroes of the equation
x^4-6x^2-7x-6=0
Have no idea
x^4-6x^2-7x-6=0
Have no idea
Answers
Answered by
Anonymous
you know the rational roots, if any, are among ±1 ±2 ±3 ±6
so, try some and fond that -2 and 3 are roots.
dividing those out you find you have
(x+2)(x-3)(x^2 + x + 1)
find the other two roots using the quadratic formula
so, try some and fond that -2 and 3 are roots.
dividing those out you find you have
(x+2)(x-3)(x^2 + x + 1)
find the other two roots using the quadratic formula
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