Math Problem Statement

factorise 5 - (3a^2 - 2a) (6-3a^2 + 2a)

Solution

To factorize the given expression 5(3a22a)(63a2+2a)5 - (3a^2 - 2a)(6 - 3a^2 + 2a), we'll follow these steps:

Step 1: Expand the product

We first expand the product (3a22a)(63a2+2a)(3a^2 - 2a)(6 - 3a^2 + 2a) using the distributive property (also known as FOIL for binomials).

(3a22a)(63a2+2a)=3a2(6)+3a2(3a2)+3a2(2a)2a(6)2a(3a2)2a(2a)(3a^2 - 2a)(6 - 3a^2 + 2a) = 3a^2(6) + 3a^2(-3a^2) + 3a^2(2a) - 2a(6) - 2a(-3a^2) - 2a(2a)

Now simplify each term:

=18a29a4+6a312a+6a34a2= 18a^2 - 9a^4 + 6a^3 - 12a + 6a^3 - 4a^2

Combine like terms:

=9a4+12a3+14a212a= -9a^4 + 12a^3 + 14a^2 - 12a

Step 2: Substitute the expanded result into the original expression

Now, substitute the expanded form into the original expression:

5(9a4+12a3+14a212a)5 - (-9a^4 + 12a^3 + 14a^2 - 12a)

Distribute the minus sign:

=5+9a412a314a2+12a= 5 + 9a^4 - 12a^3 - 14a^2 + 12a

Step 3: Final expression

The expanded and simplified expression is:

9a412a314a2+12a+59a^4 - 12a^3 - 14a^2 + 12a + 5

This is the factored form of the original expression, as it cannot be factored further into simple terms.


Would you like to go over any specific step in more detail?

Here are 5 related questions for further practice:

  1. How do you factor a quadratic expression?
  2. What are common methods to factorize polynomials of higher degrees?
  3. Can you factor the expression 6a25a46a^2 - 5a - 4?
  4. What is the process of expanding and simplifying binomials?
  5. How do you use the distributive property to simplify expressions?

Tip: When factorizing, always look for common factors or patterns such as difference of squares or perfect square trinomials.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomials
Distributive Property
Simplification

Formulas

Distributive property: (a + b)(c + d) = ac + ad + bc + bd
Combining like terms

Theorems

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Suitable Grade Level

Grades 10-12