Q. What is the modulus (absolute value) of 7−i ?Don't round. If necessary, express your answer as a radical.∣7−i∣=
Modulus of Complex Number: The modulus of a complex number a+bi is given by the square root of the sum of the squares of its real part (a) and its imaginary part (b). In this case, the complex number is 7−i, where the real part is 7 and the imaginary part is −1.Calculation: ∣7−i∣=72+(−1)2=49+1=50
Calculation of Modulus: The square root of 50 can be simplified by factoring out the square root of a perfect square that is a factor of 50. The largest perfect square factor of 50 is 25.Calculation: 50=(25×2)=25×2=52
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