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3 years ago

Which of the following is a radical equation?

Mathematics

2 answers:

weeeeeb [17]3 years ago

8 0

Answer:

Step-by-step explanation:

A radical equation persists when a radical includes a variable within it. In this case the x is in the radical, times 7. The rest of the answers do not have a variable in a radical.

slavikrds [6]3 years ago

5 0

Answer:

7 square root x = 14

Step-by-step explanation:

A radical equation will have the variable inside the radical

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Given that f(x) = x + 3<br> a) Find f(2)

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${ \qquad\qquad\huge\underline{{\sf Answer}}}$

Here we go ~

In the above question, it is given that :

$\qquad \sf \boxed{ \sf f(x) = \frac{x + 3}{2} }$

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$\qquad \sf \dashrightarrow \: f(2) = \dfrac{2 + 3}{2}$

$\qquad \sf \dashrightarrow \: f(2) = \dfrac{5}{2}$

$\qquad \sf \dashrightarrow \: f(2) = 0.5$

B.) Find ${ \sf {f}^{-1}(x) }$ :

$\qquad \sf \dashrightarrow \: let \: y = f (x)$

so, we can write it as :

$\qquad \sf \dashrightarrow \: y = \dfrac{x + 3}{2}$

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$\qquad \sf \dashrightarrow \: x = 2y - 3$

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