Math Problem Statement

Factor the expression 4x^2 - 3x - 10

Solution

The given expression to factor is 4x23x104x^2 - 3x - 10.

Steps to factor the quadratic:

We need to find two numbers that multiply to 4×(10)=404 \times (-10) = -40 and add up to 3-3.

  • Factors of 40-40 that add to 3-3 are 8-8 and 55, since 8+5=3-8 + 5 = -3.

Now, split the middle term using these numbers: 4x28x+5x104x^2 - 8x + 5x - 10

Next, group the terms: (4x28x)+(5x10)(4x^2 - 8x) + (5x - 10)

Factor out the greatest common factors (GCF) from each group: 4x(x2)+5(x2)4x(x - 2) + 5(x - 2)

Now, factor out the common binomial factor (x2)(x - 2): (4x+5)(x2)(4x + 5)(x - 2)

Thus, the factored form of the expression is: (4x+5)(x2)(4x + 5)(x - 2)

Would you like further explanation on any of these steps?


Here are 5 related questions you might find useful:

  1. How do you factor a quadratic expression when the leading coefficient is greater than 1?
  2. What is the "AC method" in factoring trinomials?
  3. How can you verify if your factorization of a quadratic is correct?
  4. What should you do if a quadratic is not factorable with real numbers?
  5. How does factoring a quadratic relate to solving quadratic equations?

Tip: Always double-check your factorization by expanding the factors to ensure they give you the original expression.

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Math Problem Analysis

Mathematical Concepts

Algebra
Factoring
Quadratic Equations

Formulas

Standard form of quadratic equation: ax^2 + bx + c
AC Method: a * c to find factors

Theorems

Factoring by grouping
Distributive property

Suitable Grade Level

Grades 8-10