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Simplify the expression fraction with numerator of the square root of negative twenty five and denominator of the quantity five minus two times i plus the quantity one minus three times i

User Lannetta
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1 Answer

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If I understood you correctly this is the expression we need to simplify:

(√(-25))/((5-2i)+(1-3i))
You should keep in mind that square root of -1 is equal to i. i is called the imaginary unit.
Let us simplify this expression:

(√(-1)\cdot √(25))/(6-5i)= (5i)/(6-5i)
To simplify this further we can multiply numerator and denominator with 6+5i to elimante imaginary numbers from denominator.

(5i)/(6-5i)\cdot (6+5i)/(6+5i) = (5i(6+5i))/(6^2-(5i)^2)= (30i-25)/(36+25)= (-25+30i)/(61)
User Quim Baget
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