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1.) Which equation has 1 - i as a solution?
(1) 
x^(2)+2x-2=0
(3) 
x^(2)-2x-2=0
(2) 
x^(2)+2x+2=0
(4) 
x^(2)-2x+2=0

11.) Which equation has 11 - ii as a solution?\newline(11) x2+2x2=0 x^{2}+2 x-2=0 \newline(33) x22x2=0 x^{2}-2 x-2=0 \newline(22) x2+2x+2=0 x^{2}+2 x+2=0 \newline(44) x22x+2=0 x^{2}-2 x+2=0

Full solution

Q. 11.) Which equation has 11 - ii as a solution?\newline(11) x2+2x2=0 x^{2}+2 x-2=0 \newline(33) x22x2=0 x^{2}-2 x-2=0 \newline(22) x2+2x+2=0 x^{2}+2 x+2=0 \newline(44) x22x+2=0 x^{2}-2 x+2=0
  1. Understand the Problem: Step Title: Understand the Problem\newlineConcise Step Description: Determine what is being asked in the problem.\newlineQuestion Prompt: Which equation has 1i1 - i as a solution?
  2. Apply Conjugate Root Theorem: Step Title: Apply the Conjugate Root Theorem\newlineConcise Step Description: Use the Conjugate Root Theorem, which states that if a polynomial has real coefficients and a complex number a+bia + bi is a root, then its conjugate abia - bi is also a root.\newlineCalculation: Since 1i1 - i is a root, the conjugate 1+i1 + i must also be a root.
  3. Test Each Equation: Step Title: Test Each Equation\newlineConcise Step Description: Substitute 1i1 - i into each equation to see which one is satisfied.\newlineCalculation for Equation (11): (1i)2+2(1i)2=0(1 - i)^2 + 2(1 - i) - 2 = 0\newlineCalculation: (12i+i2)+22i2=0(1 - 2i + i^2) + 2 - 2i - 2 = 0\newlineCalculation: (12i1)+22i2=0(1 - 2i - 1) + 2 - 2i - 2 = 0\newlineCalculation: 2i+22i=0-2i + 2 - 2i = 0\newlineCalculation: 4i+20-4i + 2 \neq 0