which of the following is a radical equation?
a.
[tex] \sqrt{x + 3 } = - 2[/tex]
b.
[tex] \sqrt{81 } = 9[/tex]
c.
[tex] \sqrt[3]{27} = x[/tex]
d.
[tex] \frac{x + 1}{x - 1} = 12[/tex]
a.
[tex] \sqrt{x + 3 } = - 2[/tex]
b.
[tex] \sqrt{81 } = 9[/tex]
c.
[tex] \sqrt[3]{27} = x[/tex]
d.
[tex] \frac{x + 1}{x - 1} = 12[/tex]
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Answer:
b
Step-by-step explanation:
because we use the fact that if two numbers are equals,then their squares are equal..
#carry on leaning