Math Problem Statement

  Write (2x + 1)(x − 3)(x − 2) in standard form.

Solution

To express the expression (2x+1)(x3)(x2)(2x + 1)(x - 3)(x - 2) in standard form, we'll first expand it step by step.

Step 1: Expand (x3)(x2)(x - 3)(x - 2)

(x3)(x2)=x22x3x+6=x25x+6(x - 3)(x - 2) = x^2 - 2x - 3x + 6 = x^2 - 5x + 6

Step 2: Multiply 2x+12x + 1 by the result from Step 1

(2x+1)(x25x+6)(2x + 1)(x^2 - 5x + 6)

Distribute 2x2x across x25x+6x^2 - 5x + 6:

2xx2=2x32x \cdot x^2 = 2x^3 2x(5x)=10x22x \cdot (-5x) = -10x^2 2x6=12x2x \cdot 6 = 12x

Now distribute 11 across x25x+6x^2 - 5x + 6:

1x2=x21 \cdot x^2 = x^2 1(5x)=5x1 \cdot (-5x) = -5x 16=61 \cdot 6 = 6

Step 3: Combine all the terms

2x310x2+12x+x25x+62x^3 - 10x^2 + 12x + x^2 - 5x + 6

Combine like terms:

2x39x2+7x+62x^3 - 9x^2 + 7x + 6

So, the expression in standard form is:

2x39x2+7x+62x^3 - 9x^2 + 7x + 6

Would you like more details, or do you have any questions?


  1. How do you expand a quadratic expression in general?
  2. What are the common methods to multiply polynomials?
  3. Can you explain how to combine like terms?
  4. What are other forms a polynomial can take besides standard form?
  5. How does the degree of a polynomial relate to the number of roots it can have?

Tip: Always remember to combine like terms carefully to avoid errors in polynomial expressions.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomial Expansion
Standard Form

Formulas

Distributive property: a(b + c) = ab + ac
Multiplying binomials: (a + b)(c + d) = ac + ad + bc + bd

Theorems

Polynomial Theorem

Suitable Grade Level

Grades 9-12