Determine whether the expression $1.399$ is rational

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Algebra 2 - Learning to solve rational equations in math class ((x+3)/(x‐2)) + (5/(x^2‐4)) = 1

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Tutorial - Simplify a rational trigonometric expression 24, ((sinx)^2 - (cosx)^2) / (1 - 2(cosx)^2)

https://www.youtube.com/watch?v=taFMJ3iNVhM

Algebra 2 - Simplify by dividing two rational expressions using factoring (32/n‐8)/(1/n‐8)

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Pre-Calculus - Learn how to simplify a trig identity 1/(tan^x+1)

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Pre-Calculus - Subtracting two rational trig expression to simplify, (cosx/(1-sinx)) - (sinx/cosx)

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Algebra 1 - Solve an equation with a rational term 1/x= 3+ 7/x^2+7x ex 2

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Function Plot

Plotting: $true$

Main Topic: Rationals and Irrationals

A rational term is an algebraic term that doesn't have literal part inside a radical. An irrational term does have literal part inside a radical.

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