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\newlineDiscuss the nature of the roots of the quadratic equation \newline(a2+b2)x23(ab)x+92=0,a+b0(a^{2}+b^{2})x^{2}-3(a-b)x+\frac{9}{2}=0,\quad a+b\neq 0

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Q. \newlineDiscuss the nature of the roots of the quadratic equation \newline(a2+b2)x23(ab)x+92=0,a+b0(a^{2}+b^{2})x^{2}-3(a-b)x+\frac{9}{2}=0,\quad a+b\neq 0
  1. Identify coefficients: Identify the coefficients of the quadratic equation.\newlineThe quadratic equation is given by (a2+b2)x23(ab)x+92=0(a^2 + b^2)x^2 - 3(a - b)x + \frac{9}{2} = 0. We can compare this with the standard form ax2+bx+c=0ax^2 + bx + c = 0 to find the coefficients.\newlineHere, a=a2+b2a = a^2 + b^2, b=3(ab)b = -3(a - b), and c=92c = \frac{9}{2}.
  2. Calculate discriminant: Calculate the discriminant of the quadratic equation.\newlineThe discriminant of a quadratic equation ax2+bx+c=0ax^2 + bx + c = 0 is given by D=b24acD = b^2 - 4ac. We will calculate the discriminant for our equation using the identified coefficients.\newlineD=(3(ab))24(a2+b2)(92)D = (-3(a - b))^2 - 4(a^2 + b^2)(\frac{9}{2})
  3. Simplify discriminant: Simplify the discriminant. \newlineD=9(ab)24(a2+b2)(92)D = 9(a - b)^2 - 4(a^2 + b^2)(\frac{9}{2})\newlineD=9(a22ab+b2)2(2a2+2b2)(9)D = 9(a^2 - 2ab + b^2) - 2(2a^2 + 2b^2)(9)\newlineD=9a218ab+9b218a218b2D = 9a^2 - 18ab + 9b^2 - 18a^2 - 18b^2\newlineD=9a2+18ab9b2D = -9a^2 + 18ab - 9b^2
  4. Factor common term: Factor out the common term.\newlineD=9(a22ab+b2)D = -9(a^2 - 2ab + b^2)\newlineD=9(ab)2D = -9(a - b)^2
  5. Analyze roots: Analyze the discriminant to discuss the nature of the roots.\newlineSince D=9(ab)2D = -9(a - b)^2 and a square is always non-negative, (ab)20(a - b)^2 \geq 0. Therefore, D0D \leq 0.\newlineIf D < 0, the quadratic equation has two complex roots.\newlineIf D=0D = 0, the quadratic equation has one real repeated root.\newlineSince we have D=9(ab)2D = -9(a - b)^2 and it is given that a+b0a + b \neq 0, which does not affect the sign of DD, we can conclude that D < 0.
  6. Conclude root nature: Conclude the nature of the roots based on the discriminant.\newlineBecause D < 0, the roots of the quadratic equation are complex and not real. They will be in the form of a+bia + bi and abia - bi, where ii is the imaginary unit.

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