" 21."(2)/(x^(2))-(5)/(x)+2=0,x!=0

(2)/(x^(2))-(5)/(x)+2=0x!=0

(21)/(x^(2))-(29)/(x)-10=0

Find the roots of the following quadratic equations by factorisation method : (i) 2x^(2)+(5)/(3)x-2=0 (ii) (2)/(5)x^(2)-x-(3)/(5)=0 (iii) 3sqrt2x^(2)-5x-sqrt2=0 (iv) 3x^(2)+5sqrt5x-10=0 (v) 21x^(2)-2x+(1)/(21)=0

If x=(5-sqrt(21))/(2) then prove that (x^(3)+(1)/(x^(3)))^(2)-5(x^(2)+(1)/(x^(2)))+(x+(1)/(x))=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

21x^(2) - 28x + 10=0

Find the roots of the following quadratic equations by the factorization method: 21 x^(2) -2x+(1)/(21)=0