" (ni) "x^(2)+10x+21=0

(i) x^(2) -10x+21 = 0 (ii) y^(2) -11y+18 = 0

Solve each of following equations, using the formula : (i) x^(2)-6x=27 (ii) x^(2)-10x+21=0 (iii) x^(2)+6x-10=0 (iv) x^(2)+2x-6=0

Solve: (i) 27x^(2)-10x+1=0 . (ii) 21x^(2)-28x+10=0 .

Two roots of the quadratic equation ix^(2) -10x -21i=0 is-

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

Evaluate lim_(x to 3) (x^(2) - 10x + 21)/(x^(2) - 9)

Evaluate lim_(x to 3) (x^(2) - 10x + 21)/(x^(2) - 9)

(i) x^(2) + 6x + 5 = 0 (ii) y^(2) -10y+21 = 0