CBSE Class 10 Answered
1. Show that ( x square+1) whole square -x square =0 has no real roots.
2. If the zeros of the polynomial x cube- 3x square +x+1 are a-b, a. a+b . Find a and b
Asked by krithiknarayan90 | 08 Jul, 2018, 10:38: AM
Expert Answer
(x2 + 1)2 - x2 = 0
x4 + 2x2 + 1 - x2 = 0
x4 + x2 + 1 = 0
x2 = m
m2 + m + 1 = 0
Find discriminant of the quadratic equation you get it is less than zero.
Hecne, equation has no real roots.
Answered by Sneha shidid | 11 Jul, 2018, 10:37: AM
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