Question

Please answer this with steps

Answer 1

Evaluate by using suitable identity:

(x - 2)(x + 2)(x² + 4)

Formula used:

• (a + b)(a - b) = a² - b²

Method:

First let's solve the first part of the question.

(x - 2)(x + 2)

= (x² - 2²)

= (x² - 4)

Now this number is multiplied with (x² + 4)

(x² - 4)(x² + 4)

= (x²)² - 4²

= (x⁴ - 16)

∴ The answer is (x⁴ - 16)

Some more identities:

1. (a + b)² = a² + b² + 2ab
2. (a - b)² = a² + b² - 2ab
3. (a + b)³ = a³ + b³ + 3ab(a + b)
4. (a - b)³ = a³ - b³ - 3ab(a - b)
5. (a + b + c)² = a² + b² + c² + 2(ab + bc + ca)

Answer 2

Answer:

hope it's helpful to you

Step-by-step explanation:

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