Math Problem Statement

give the sum and product of the roots of the equation 5x²-8=22x

Solution

Let's first rewrite the given equation 5x28=22x5x^2 - 8 = 22x in standard form:

5x222x8=05x^2 - 22x - 8 = 0

For a quadratic equation of the form ax2+bx+c=0ax^2 + bx + c = 0:

  • The sum of the roots is given by ba-\frac{b}{a}.
  • The product of the roots is given by ca\frac{c}{a}.

For the equation 5x222x8=05x^2 - 22x - 8 = 0:

  • a=5a = 5
  • b=22b = -22
  • c=8c = -8

Sum of the roots:

Sum=ba=225=225\text{Sum} = -\frac{b}{a} = -\frac{-22}{5} = \frac{22}{5}

Product of the roots:

Product=ca=85=85\text{Product} = \frac{c}{a} = \frac{-8}{5} = -\frac{8}{5}

Final Answer:

  • The sum of the roots is 225\frac{22}{5}.
  • The product of the roots is 85-\frac{8}{5}.

Would you like more details on how to solve this or any related topic?

Here are five related questions you might find interesting:

  1. How do you find the exact roots of the equation 5x222x8=05x^2 - 22x - 8 = 0?
  2. What is the significance of the sum and product of roots in solving quadratic equations?
  3. Can you solve quadratic equations using the factoring method, and how would it apply to this equation?
  4. What are the implications if the sum or product of roots turns out to be zero?
  5. How can the sum and product of roots be used to reconstruct the original quadratic equation?

Tip: The discriminant of a quadratic equation can help you determine the nature of the roots (real and distinct, real and equal, or complex) before solving the equation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations

Formulas

Quadratic equation formula ax^2 + bx + c = 0

Theorems

Quadratic formula

Suitable Grade Level

Grades 9-12