Question

solve (x²-4) pls ans​

Answer 1

Answer:

the answer is (x+2)(x-2)

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Answer 2

Answer:

x = -2 and 2

Step-by-step explanation:

It can be solved by the identity of a² - b² = (a + b)(a - b)

=> x² - 4 = a² - b²

=> x² - 2² = a² - b²

Comparing, a = x and b = 2

Now, a² - b² = (a + b)(a - b)

=> x² - 4 = (a + b)(a - b)

=> x² - 2² = (x + 2)(x - 2)

So, to find x, equate the factors to 0.

=> x + 2 = 0 and x - 2 = 0

∴ x = -2 and 2