Al-Khwarizmi — "The square of the unknown is equal to the number."
The square of the unknown is equal to the number.
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More from Al-Khwarizmi
"The root is the side of the square."
"The Hindus have a method of calculation which they call 'the nine figures'."
"Numbers are the roots of all calculations."
"The art of calculation is indispensable in commerce and daily life."
"The method of calculation must be clear and simple."
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