x*3-7x+6 k roots kya h please btay
Answer (1)
Student Expert
29th Mar, 2021
Hi Dear,
I think you want to ask the roots of a cubic equation and the equation reads as below:
x^3 - 7x + 6 .
In case of cubic equations the equation will have three roots. To find the roots you need to Firstly equate the equation to zero. And then solve for the roots as below:
x3−7x+6=0
x3−x2+x2−7x+6=0
x2(x−1)+x2−6x−x+6=0
x2(x−1)+x(x−6)−1(x−6)=0x2(x−1)+(x−6)(x−1)=0
(x−1)(x2+x−6)=0(x−1)(x2+3x−2x−6)=0
(x−1){x(x+3)−2(x+3)}=0(x−1)(x+3)(x−2)=0
So the roots are x=1,x=−3andx=2
Hope this helps.. Good luck
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