4-2.Quadratic Equations and Inequations
normal

જો $r_1, r_2, r_3$ એ સમીકરણ $x^3 -2x^2 + 4x + 5074 = 0$ ના બીજો હોય તો $(r_1 + 2)(r_2 + 2)(r_3 + 2)$ ની કિમત મેળવો 

A

$5050$

B

$-5050$

C

$-5066$

D

$-5068$

Solution

$x^3 -2x^2 + 4x + 5074 = (x -r_1) (x -r_2) (x -r_3)$ put $r = -2$ $-5050 = (r_1 + 2) (r_2 + 2) (r_3 + 2)$.

Standard 11
Mathematics

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