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# Expand and simplify polynomials

This calculator simplifies polynomial expressions.

Example 1: to simplify $(x-1)(x+1)$ type (x - 1)( x + 1).

Example 2: to expand $(a + 2b - c)^3$ type (a + 2b - c)^3.

Example 3: to simplify $\left(27(2/3-2x)^3-8(1-9x)\right)/(216x^2)$ type (27(2/3-2x)^3-8(1-9x))/(216x^2).

Expand and simplify polynomial expressions
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## Examples

 $a)~~(4x^2 - 4x - 7)(x + 3)-x(4x^2+8x-19)$ $b)~~(a+b)^2-(a-b)^2$ $c)~~ \frac{(a+b+c)^2-(a-b-c)^2}{4a}$ $d)~~(x^2-x+1)(x+1)-(x^2+x+1)(x-1)$ $e)~~\left(\frac{a+b}{2}+\frac{a-b}{2}\right)^2-\left(\frac{a+b}{2}-\frac{a-b}{2}\right)^2$ $f)~~\frac{(a-b)^3+(a+b)^3-2a(a^2+b^2)}{4b^2}$

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