Q. 7

Find the roots of

Answer :

x2 + 7x + 10 = 0

By Middle term splitting,


x2 + 5x + 2x + 10 = 0


(x + 5)(x + 2) = 0


x = -5, x= - 2


OR


3ax2 - 6x + 1 = 0


For no real roots, D < 0


(-6)2 - 4(3a)(1) < 0


12a > 36


a > 3


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