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Answer In 1637, a very important book was published in France by Rene Descartes. he used the letter 'x', 'y','z' to stand for the unknown amounts in his maths problems. his book became very popular. other mathematicians followed his practice & started using the letter 'x' to denote the unknown.
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How is Algebra done?
Algebra is the basis of maths you can use it to solve unknown terms such as x. For example: 3x - 3 = 0 3x = 3 x = 1
In Maths how do you work out algebra?
You have to find out what the unknown number is. Example: x= 2y-4 y=12 What this is saying is you have to find out what x is if y is 12. So the sum reads 2x12-4. X=20
What is six more than an unknown number?
If we let the unknown number be represented by the variable x, then six more than the unknown number would be x + 6. This expression represents adding six to the unknown number. So, if you have an unknown number x, adding six to it gives you x + 6.
What is a symbol used to represent a quantity that can change?
In maths most vairables are represented with letters. EG. A+B=C So for a best guest and in this case i would say X would be the best for an unknown variable that could change, as x is normally associated with many unknowns.
In x3 x is called?
X is an unknown number.
