Why radical equations = rational exponents equations

How to solve a radical equation using rational exponents.

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TC Math Notes

[robertarguello]

Indeed!👍 ... The first step in solving this problem or any problem similar to this one, is to isolate the variable on one side of the equation. For example, k = #

[hans-joergwahmkow]

That one was easy. Could do it in my head.

[panlomito]

No calculator needed:
3 . SQR(k) / 2 = 1 so 3 . SQR(k) = 2 and (SQR(k))² = (2/3)² = 4/9
k = 4/9

[danieldennis]

K=4/9 did it two ways to ensure I didn't make a mistake. Math checks.

[markjakeway]

why get two negatives? Negatives cause problems for students, a better approach is to always get the variable to be positive. So 6 - 5 = 3rootk/w id far better?

[picasso]

Hmmmm!! Why take 10 minutes for this example? Max two minutes for even kids!!