Choose the correct answer from the given four options : The roots of the equation x2 – 3x – 10 = 0 are

Question

KollegeApply · Accepted Answer

x2 – 3x – 10 = 0 x = `(-(-3) $\pm$ sqrt((-3)^2 - 4 xx 1 xx (-10)))/(2 xx 1) = (3 $\pm$ sqrt(9 + 40))/(2) = (3 $\pm$ sqrt(49))/(2) = (3 + 7)/(2) $\therefore$ x = (3 + 7)/(2) = 5 and x = (3 - 7)/(2) = (-4)/(2)` = –2 x = 5, – 2 or – 2, 5.

AChoose Your Answer