Use a Graphing Calculator to Approximate the Real Zeros $$f ( x ) = x ^ { 4 } - 9 x ^ { 2 } + 20$$

question 194

Multiple Choice

Use a graphing calculator to approximate the real zeros. Give each zero as a decimal to the nearest tenth.
- $$f ( x ) = x ^ { 4 } - 9 x ^ { 2 } + 20$$

• A) \(- 1,2.7,2.7 , - 2.7\)
• B) \(2.2 , - 2.2,2 , - 2\)
• C) \(2.2,2\)
• D) \(5 , - 5,4 , - 4\)

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Definitions:

24 to 28 Months Old

A developmental age range in toddlers marked by significant growth in motor skills, language acquisition, and independence.

9 to10 Months Old

A developmental age range in infants characterized by major milestones such as improved mobility, babbling, beginning of object permanence understanding, and anxiety around strangers.

4 to 6 Months Old

A developmental stage in infants characterized by significant growth, the beginning of solid food introduction, and emerging motor skills like rolling.

Phonemes

The basic units of sound in a language that distinguish one word from another, for example, the difference between the sounds of "p" and "b."