1.

Factorise: 3x^2-x-7=0​

Answer»

<P>Step-by-step explanation:

p(X)=>3x^2-x-7=0

p(x)=0........[for the zeroes of p(x)]

=>3x^2-x-7=0........(1)

discriminat ,D=b^2-4ac

= 1-4×3×(-7)

=85.............. (2)

We know that,

X= -b +or- rootD/2a

= (-1) +or- root85/6......(from2)

= (-1) +or- 9.216/6

X= 1+9.216/6 , X= 1-9.216/6

= 10.216/6. , X = -8.216/6

= 1.703. , X = -1.37

Here. UR answer......thank u


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