" (vii) "(5)/(2)x+3=(21)/(2)

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

Multiply : 3 - (2)/(3)xy + (5)/(7)xy^(2) - (16)/(21)x^(2)y by -21 x^(2)y^(2)

If x=(5-sqrt(21))/(2), then the value of (x^(3)+(1)/(x^(3)))^(2)-5(x^(2)+(1)/(x^(2)))+(x+(1)/(x))

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

(14)/(x+y)+(3)/(x-y)=5,(21)/(x+y)-(2)/(x-y)=1

Find the matrix X satisfying. [(2,1),(5,3)] X [(5,3),(3,2)] = [(1,0),(0,1)]

Find the term independent of x in (2x^(5)+(1)/(3x^(2)))^(21)

21. If lim_(xrarroo) e^(x^2) - cosx / (sin^2x) is equal to (a) 3 (b) 3/2 (c) 5/4 (d) 2