5x^(2)-6x-2=0

Find by factorization method: 6x^(2)-5x-21=0

Without solving, examine the nature of the roots of the equations : (i) 5x^(2)-6x+7=0 (ii) x^(2)+6x+9=0 (iii) 2x^(2)+6x+3=0

Determine the nature of the roots of the following quadratic equations: 2x^(2)-3x+5=0 (ii) 2x^(2)-6x+3=0 (iii) (3)/(5)x^(2)-(2)/(3)x+1=0

Universal set U={x|x^(5)-6x^(4)+11x^(3)-6x^(2)=0}A={x|x^(2)-5x+6=0}B={x|x^(2)-3x+2=0} what is (A nn B) equal to?

Universal set, U={x|x^(5)-6x^(4)+11x^(3)-6x^(2)=0} A={x|x^(2)-5x+6=0} B={x|x^(2)-3x+2=0} What is (AnnB) ' equal to ?