Math Problem Statement

7x^2-19x+10=0

Solution

To solve the quadratic equation:

7x219x+10=07x^2 - 19x + 10 = 0

we'll use the quadratic formula:

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

In this equation:

  • a=7a = 7
  • b=19b = -19
  • c=10c = 10

Step 1: Calculate the Discriminant

The discriminant is given by b24acb^2 - 4ac:

b24ac=(19)24710b^2 - 4ac = (-19)^2 - 4 \cdot 7 \cdot 10 =361280= 361 - 280 =81= 81

Step 2: Apply the Quadratic Formula

Now we substitute into the quadratic formula:

x=(19)±8127x = \frac{-(-19) \pm \sqrt{81}}{2 \cdot 7} =19±914= \frac{19 \pm 9}{14}

Step 3: Solve for the Two Values of xx

  1. For x=19+914x = \frac{19 + 9}{14}:

    x=2814=2x = \frac{28}{14} = 2

  2. For x=19914x = \frac{19 - 9}{14}:

    x=1014=57x = \frac{10}{14} = \frac{5}{7}

Solution

The solutions to the equation are:

x=2andx=57x = 2 \quad \text{and} \quad x = \frac{5}{7}

Would you like further details or have any questions?


Related Questions:

  1. How can we determine the nature of the roots of a quadratic equation?
  2. What are some alternative methods for solving quadratic equations?
  3. How do we factor a quadratic equation if it’s factorable?
  4. What does it mean if the discriminant is negative?
  5. How would the solutions change if aa, bb, or cc were different?

Tip: The discriminant b24acb^2 - 4ac tells you whether the solutions are real or complex. If it's positive, the equation has two real solutions.

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Equations
Discriminant

Formulas

Quadratic formula: x = (-b ± √(b² - 4ac)) / 2a

Theorems

Quadratic formula theorem

Suitable Grade Level

Grades 9-10