SOLUTION: Use the zero or root of graphing utility to find the real zeros of the function f (x)= x^4 =3x^2 - 5x^2 - 21x + 22 and find the exact values of the remaining zeros.

Question 1034573: Use the zero or root of graphing utility to find the real zeros of the function
f (x)= x^4 =3x^2 - 5x^2 - 21x + 22 and find the exact values of the remaining zeros.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
You would first need to fix your character mistake to show PLUS or to show MINUS; and the likely wrong exponent; and then pick at each root shown in the graph until your quotient is able to be finished using factorization or quadratic formula.

x^4-3x^3-5x^2-21x+22
(the site is not showing this graph properly.)

x^4+3x^3-5x^2-21x+22
(the graph will look much better when the function run through Google.)

One might guess that this is the function you are given. Try synthetic division to take care of binomial linear factors x-1 and x-2. You have a quadratic factor which will likely give you two complex roots.
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