The solution of are 1 + 2i and 1 – 2i Solution: Given, equation is We have to find the roots of the given quadratic equation Now, let us use the quadratic formula --- (1) Let us determine the nature of roots: Here in a = 1 ; b = -2 ; c = 5
Since , the roots obtained will be complex conjugates. Now plug in values in eqn 1, we get,
On solving we get,
we know that square root of -1 is "i" which is a complex number
Hence, the roots of the given quadratic equation are 1 + 2i and 1 – 2i
