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13 May, 15:35

What is true about the complex number - 5+5i? Choose all correct answers A. It lies in quadrant 4 B. The modulus is 5√2 C. the modulus is 10 D. it lies in quadrant 2

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  1. 13 May, 17:05
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    The modulus = sqrt (5^2 + (-5) ^2) = sqrt 50 = 5 sqrt2 so B is true

    And as the real part is negative and imaginay is poitive it must lie in Quadrant 2.

    D is also true.
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