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Swapna Tripathydash 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
X³ - 3x² - 9x - 5
= x³ + x² - 4x² - 4x - 5x - 5
= x²( x + 1) - 4x ( x + 1) - 5(x + 1)
= (x + 1)(x² - 4x - 5)
= (x + 1)(x² -5x + x - 5)
= (x + 1)(x - 5) (x + 1)
hence, (x +1), (x -5) and (x +1) are the factors of given polynomial .
OR
x3 - 3x2 - 9x - 5
Let p(x) = x3 - 3x2 - 9x - 5
By trial, we find that
p(- 1) = (- 1)3 - 3(- 1)2- 9(- 1) -5
= - 1 - 3 + 9 - 5 = 0
∴ By Factor Theorem, x - (- 1), i.e., (x + 1) is a factor of p(x).
Now,
x3 - 3x2 - 9x - 5
= x2(x + 1) - 4x(x + 1) - 5(x + 1)
= (x + 1)(x2- 4x - 5)
= (x + 1)(x2 - 5x + x - 5)
= (x+ 1){x(x - 5) + 1 (x - 5)}
= (x + 1)(x - 5)(x + 1).
Posted by Lalati Kumar 5 years, 2 months ago
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Green Sharma 5 years, 2 months ago
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Yogita Ingle 5 years, 3 months ago
a = p*(1 + r/100)^n
a = 7865, p = 6500, n = 2 & r = ?
a/p = (1+r/100)^n
(a/p)^(1/2)=(1+r/100)
[(a/p)^(1/2)]-1=r/100
100*{[(a/p)^(1/2)]-1} = r
100*{[(7865/6500)^(1/2)]-1}=r=10%
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Harsh Mishra 5 years, 3 months ago
If You mean this one Denominator so let's explore what the numerator and the denominator represent in a fraction. ... For example, in the fraction 5/9, the numerator is 5 and the denominator is 9, so the fraction 5/9 means 5 parts of a whole object, which is divided into 9 parts of equal size.......That's It, Or if you're talking about anything else, then sorry but I don't know......
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