Identify whether each of the following expression is a quadratic expression in one variable. Give reason for your anwser a. {x}^(2) + 5x - 10 b. - 4 {u}^(2) - 3u c. 5x + 8 d. {x…

Question

Identify whether each of the following expression is a quadratic expression in one variable. Give reason for your anwser

a.

`{x}^(2) + 5x - 10`
b.

`- 4 {u}^(2) - 3u`
c.

`5x + 8`
d.

`{x}^(3) + 2x + 1`
e.

`(2)/(9) {y}^(2)`
f.

`\frac{ {x}^(2) + 7x + 2}{x}`


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Answer 1

i believe anything that is squared (^2) is a quadratic. so a, b, e and f are quadratics. you could also check on desmos to see if they are parabolas (u shape).