In the following equations, find whether variables x,y,z etc. represent rational or irrational numbers y2 = 16

Foundation

Mathematics Foundation

Properties of Real Number

Irrational Number

Linear Equations in One Variable

Question

In the following equations, find whether variables x,y,z etc. represent rational or irrational numbers $y 2 = 16$

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y 2 = 16

⇒ y = 4

Here 4 is a rational number

So y is a rational number