Which expression would be easier to simplify if you used commutative property to change the grouping?
2 answers:
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The solution of are 1 + 2i and 1 – 2i
<u>Solution:</u>
Given, equation is
We have to find the roots of the given quadratic equation
Now, let us use the quadratic formula
--- (1)
<em><u>Let us determine the nature of roots:</u></em>
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
A) 0.50798
b) 0.42465
c) 0.35197
d) 0.040930
b) 0.42465
c) 0.35197
d) 0.040930