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Each solution to x^2 + 5x + 18 = 0 can be written in the form a + bi where a and b are real numbers. What is a^2 + b^2?

 Jul 14, 2021
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Each solution to x^2 + 5x + 18 = 0 can be written in the form a + bi where a and b are real numbers. What is a^2 + b^2?

 

Hello Guest!

 

\(x^2 + 5x + 18 = 0\\ x=-2.5\pm \sqrt{6.25-18}\\ a+bi=-2.5\pm \sqrt{11.75}\cdot i\)

 

\(a^2+b^2=6,25-11.75\)

\(a^2+b^2=-5.5\)

laugh  !

 Jul 15, 2021

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