Factorization Techniques

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Q1. Factor the expression 4x^2 - 12x + 9.

Solution:

The expression 4x^2 - 12x + 9 is also a perfect square trinomial. It factors to (2x - 3)(2x - 3) or (2x - 3)^2.

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Q2. Factor the polynomial 2x^2 - 8.

Solution:

Factor out the common term 2: 2(x^2 - 4) = 2(x - 2)(x + 2).

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Q3. Factor the expression x^2 - 4.

Solution:

The expression x^2 - 4 is a difference of squares. It factors to (x - 2)(x + 2).

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Q4. Factor the polynomial x^3 - 3x^2 - 4x.

Solution:

First, factor out the common term x: x(x^2 - 3x - 4). Now, factor the quadratic x^2 - 3x - 4 to get x(x - 4)(x + 1).

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Q5. What is the solution to the inequality 5x + 3 > 2x + 12?

Solution:

Subtract 2x from both sides: 3x + 3 > 12. Then subtract 3: 3x > 9. Finally, divide by 3: x > 3.

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Q6. What is the solution set for the inequality x + 5 > 2?

Solution:

To solve x + 5 > 2, subtract 5 from both sides: x > -3.

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Q7. What is the factored form of x^2 + 4x + 4?

Solution:

This is a perfect square trinomial. It factors to (x + 2)(x + 2) or (x + 2)^2.

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Q8. Solve the equation 2x^2 - 8 = 0.

Solution:

First, add 8 to both sides: 2x^2 = 8. Then divide by 2: x^2 = 4. Finally, take the square root: x = ±2, so the solutions are x = 2 and x = -2.

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Q9. What is the solution to the inequality x + 5 > 2?

Solution:

Subtract 5 from both sides: x > -3.

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Q10. What is the factored form of x^2 + 6x + 9?

Solution:

The expression x^2 + 6x + 9 is a perfect square trinomial. It factors to (x + 3)(x + 3) or (x + 3)^2.