Math Problem Statement

Give me problems where I have to use quadratic equation and also give me problems where there are imaginary numbers and also where I can factor the quadratic

Give me problems where I have to use quadratic equation and also give me problems where there are imaginary numbers and also where I can factor the quadratic

Solution

The given problem is a quadratic equation: x22x+6=0x^2 - 2x + 6 = 0. To solve this, we will use the quadratic formula:

x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

Here:

  • a=1a = 1,
  • b=2b = -2,
  • c=6c = 6.

Substitute these into the formula:

x=(2)±(2)24(1)(6)2(1)x = \frac{-(-2) \pm \sqrt{(-2)^2 - 4(1)(6)}}{2(1)} x=2±4242x = \frac{2 \pm \sqrt{4 - 24}}{2} x=2±202x = \frac{2 \pm \sqrt{-20}}{2}

Since the discriminant (20-20) is negative, the solutions involve imaginary numbers:

x=2±202x = \frac{2 \pm \sqrt{-20}}{2} x=2±2i52x = \frac{2 \pm 2i\sqrt{5}}{2} x=1±i5x = 1 \pm i\sqrt{5}

Solutions:

x=1+i5,x=1i5x = 1 + i\sqrt{5}, \quad x = 1 - i\sqrt{5}


Now, here are your requested problems:

Problems Involving Quadratic Equations:

  1. Solve 2x23x2=02x^2 - 3x - 2 = 0 using the quadratic formula.
  2. Solve x2+4x+8=0x^2 + 4x + 8 = 0, which involves imaginary numbers.
  3. Factorize x25x+6=0x^2 - 5x + 6 = 0.
  4. Solve 3x2+x4=03x^2 + x - 4 = 0 by completing the square.
  5. Solve x2+2x+10=0x^2 + 2x + 10 = 0 and express the roots in terms of imaginary numbers.

Tip:

Always check the discriminant (b24ac)(b^2 - 4ac) first to determine whether the roots are real, repeated, or complex. Let me know which problems you'd like help solving or if you'd like further explanation!

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations
Complex Numbers
Factoring

Formulas

Quadratic formula: x = (-b ± √(b^2 - 4ac)) / 2a

Theorems

Discriminant analysis (b^2 - 4ac)
Factoring quadratic equations

Suitable Grade Level

Grades 9-12