What does x mean in a math equation

Mathematics

2 answers:

lara [203]3 years ago

8 0

X is a variable. You dont have to know what the value is.In the equation it may ask you to find the value of x

monitta3 years ago

4 0

An unknown variable ..............

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Sindrei [870]

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Julli [10]

If 11.25 inches snow fell in 4.5hrs,
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So,
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The equation given is $x^{2} =a$ where a is some number.
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$x=plusminus \sqrt{a}$

Now let's think through what happens for various values of a.

TWO SOLUTIONS
If a is a positive number the above yields two solutions. Take for example:
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There will be two solutions (one positive and one negative) as there are two numbers (here -7 and +7) that when multiplied by themselves give 49. That is, $7^{2} =49$ and $(-7)^{2}=49$ . The positive root is called the principal root and the negative root is called the secondary root. This will be the case anytime we take the root of a positive number.

ONE SOLUTION
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balandron [24]

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