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ehidna [41]
3 years ago
5

Use the x-intercept method to find all real solutions of the equation. x^3-8x^2+17x-10=0

Mathematics
2 answers:
abruzzese [7]3 years ago
6 0

Answer:

 x^3-8x^2+17x-10=(x-5)(x-2)(x-1)  

Step-by-step explanation:

Given : Equation - x^3-8x^2+17x-10=0

To Find : All real solutions of the equation

Step1 - Write the equation :

x^3-8x^2+17x-10=0

Step 2 :  To find the x-intercept we plot the graph,

when we plot the graph the points where y=0 are the x-intercept

Step 3: Points where y=0 are 5,2,1 (shown in the attached graph)

Therefore, (x-5)(x-2)(x-1) are the solutions of the equation.

Hence,  x^3-8x^2+17x-10=(x-5)(x-2)(x-1)



Zarrin [17]3 years ago
6 0
F(2)  = 8 - 32 + 34 - 10 =  0

so one real solution is x = 2 and x - 2 is a factor.,

Dividing  the function by x -2 gives

x^2 - 6x + 5 

x^2 - 6x + 5 = 0

(x - 5)(x - 1) = 0  

x = 1 , 5

All real roots are 1,2 and 5.
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