Gujarati
4-2.Quadratic Equations and Inequations
medium

समीकरण ${x^4} - 4{x^3} + 6{x^2} - 4x + 1 = 0$ के मूल होंगे

A

$1, 1, 1, 1$

B

$2, 2, 2, 2$

C

$3, 1, 3, 1$

D

$1, 2, 1, 2$

Solution

(a) माना  $f(x) = {x^4} – 4{x^3} + 6{x^2} – 4x + 1 = 0$

$\Rightarrow$  $(x – 1)({x^3} – 3{x^2} + 3x – 1) = 0$

$\Rightarrow$   $(x – 1){(x – 1)^3} = 0$

$\Rightarrow$ $x = 1,\,1,\,1,\,1$

Standard 11
Mathematics

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