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Yogita Ingle 6 years, 7 months ago
x3+ x - 3x2 - 3
= x (x2 + 1) - 3 (x2 + 1)
= (x2 + 1) ( x- 3)
Posted by Chetna Sahu 6 years, 7 months ago
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Yogita Ingle 6 years, 7 months ago
Terminating decimals: Terminating decimals are those numbers which come to an end after few repetitions after decimal point.
Example: 0.5, 2.456, 123.456, etc. are all examples of terminating decimals.
Non terminating decimals: Non terminating decimals are those which keep on continuing after decimal point (i.e. they go on forever). They don’t come to end or if they do it is after a long interval.
For example:
π = (3.141592653589793238462643383279502884197169399375105820974.....) is an example of non terminating decimal as it keeps on continuing after decimal point.
Musaif Karjikar 6 years, 7 months ago
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Gaurav Seth 6 years, 7 months ago
here are the three numbers whose decimal expansion are non terminating and non recurring:-
1) √2= 1.4142.........
2) √3= 1.73205......
3) √5 = 2.236......
these values are non terminating and non recurring.
thus, we say them as irrational numbers.
IRRATIONAL NUMBERS:-
1)The numbers which cannot be written in p/Q form and known as irrational numbers.
2) the decimals which are non terminating and non recurring are known as irrational numbers.
3) is the natural number "n" is not a square number, then the square root of the "n" is an irrational number.
EXAMPLES OF IRRATIONAL NUMBERS:-
1) root 2
2) root 3
3) root 5
4) root 6
5) π
etc.
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Yogita Ingle 6 years, 7 months ago
x³-x
= x ( x2 - 1)
= x (x - 1) (x + 1) [because (a2 - b2 = (a-b) (a+b)]
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