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Standard form lets us easily read, write and understand a decimal number, an equation, or a polynomial. Imagine writing the distance of the sun from Mars. Would it be easy to read or write 228,000,000 km? Of course not.
That’s where standard form comes in handy. The same goes for small numbers like the mass of an atom. Standard form or scientific notation (term used i the UK) is not only used for decimal numbers. We can also use it for
We can simply use a standard form calculator to convert a number into standard form.
However, if you find it difficult to do it by yourself, keep reading this post because we are going to explain how to convert a number, equation, or polynomial in standard form.
We will go through an example to understand how to write numbers in standard form?
An atom is composed of three particles which are electron, proton, and neutron. A proton weighs 0.00000000000000000000000000167 Kg.
That’s a very small number which could be pretty daunting to read or write. Imagine a scientist working on atoms. It would be a waste of time if the scientist has to write that number a few times.
Let’s save the scientist from a lot of extra work by converting the mass of the proton into standard form.
1.67 x 10
1.67 x 10 ^{-27}
Now, we can effortlessly use this number regardless of it being a very small number.
Note: When raising a number as a power of 10, place a negative sign with power if you have moved the decimal from left to right. If you moved the decimal from right to left, the power (exponent) should be positive.
Standard form of a linear equation is,
Ax + By = C
To make a standard linear equation, your equation should be in the above form. Here are the key points to consider linear equation and convert to standard form calculator.
Let’s apply these rules to a linear equation.
Example: 2y = 4x + 7
– 4x + 2y = 7
4x - 2y = -7
This equation is now in standard form. Where,
A = 4, B = -2, C = -7
The standard form of a quadratic equation is,
Ax^{2} + bx + c = 0
Let’s put a raw quadratic equation in standard form to understand the method.
Example: x(12 + x) = -5
12x + x^{2} = -5
x^{2} + 12x = -5
x^{2} + 12x + 5 = 0
Where, a = 1, b = 12, c = 5
The concept behind the standard form of a polynomial is to write down the variable with the highest degree in the first place. By degree, we refer to the exponent of the variable.
Example: 5x^{2} + 2x^{6} – 8 + 3x^{5} + 7x^{4}
We will arrange the equation in descending order using the degree (exponent). In this case, 2x^{6 }is the highest degree term.
2x^{6} + 3x^{5} + 7x^{4} + 5x^{2} - 8
The rules discussed above are different for each type of equation. You cannot apply the rules of a linear equation to make the standard form of a polynomial. You should be able to identify a polynomial, linear, or quadratic equation before converting to standard form.
Last updated: November 8, 2022
Jacquelin Smith is an accomplished writer and a Researcher; She has done MS(Computer Science) and doing content writing for since 2019. She is an ardent writer and expert in Niches like Digital Marketing, Social media, Mathematics, etc. She is an expert writer and commentator at the same time.