Question

24. Evaluate f(x) =

5x+25\
2x^2-50
when x = -5.

1
- 1 / 2
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0

Answer 1

`\Large\textsf{\textbf{Answer\::}}`

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`\Large\textsf{\textbf{Calculations\::}}`

Plug in the value of x (-5) and simplify as follows :

`\displaystyle(5(-5)+25)/(2(-5)^2-50)`

`\displaystyle(-25+25)/(2(25)-50)`

`\displaystyle(0)/(50-50)`

`\displaystyle(0)/(0)`

We know that we can't divide by zero. Dividing by zero results in infinity , which is not a number .

So the expression is :

`\textsf{\textbf{und.efined}}`

`\small\text{hope\:helpful~}`

Answer 2

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Explanation:

1. Input x = -5 in function f(x):

`5(-5) + 25 / 2(-5)^(2) - 50`

`-25+25 / 50 - 50`

`0/0`

2. Determine the domain

`0/0`

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