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Sunday 18th of March
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 Depdendent Variable

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 Dependent Variable

 Number of inequalities to solve: 23456789
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Treat radicals like you would a variable (like x). Only like radicals can be added or subtracted.

Example

1. simplify radical to simplest terms

2. Combine like radicals and reduce

## Multiplying radicals by a binomial

Again, treat the radical like a variable and multiple each term by the multiplier

Example

Take each term in the first bracket and multiply it by each term in the 2nd.

Example

A radical should never be left as a denominator in a fraction. Multiple the fraction by a radical to eliminate the fraction.

Example

Notice that if the denominator is a binomial we have to multiple by its conjugate (we keep the values the same, but change the sign in -between the terms). The product of two conjugates is always a rational number.

Steps:

1. multiple the radical by a conjugate

2. reduce