Q. 10 E5.0( 5 Votes )

Find the modulus of each of the following:

Answer :


Firstly, we calculate and then find its modulus

[ (a + b)2 = a2 + b2 + 2ab]

[ i2 = -1]

Now, we rationalize the above by multiplying and divide by the conjugate of 4 + 3i


Now, we know that,

(a + b)(a – b) = (a2 – b2)

So, eq. (i) become

[ i2 = -1]

[ i2 = -1]

Now, we have to find the modulus of


Hence, the modulus of is

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