Find All Real Zeros of the Polynomial $p ( x ) = x ^ { 4 } - 9 x ^ { 2 } + 20$

question 36

Essay

Find all real zeros of the polynomial $p ( x ) = x ^ { 4 } - 9 x ^ { 2 } + 20$ . Use the quadratic formula if necessary.

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Definitions:

Break-Even Level Of Sales

The amount of revenue from sales that is exactly sufficient to cover both fixed and variable costs, resulting in zero net profit or loss.

Variable Cost

A cost that varies directly with the level of production or sales volume.

Net 30 Policy

A payment term indicating that payment is due in full 30 days after the invoice date.