Question

Draw the graph of P (x)=x²-4 and find it's zeroes​

Answer 1

Answer:

zeroes are 2 and -2

Step-by-step explanation:

P ( x ) = x² - 4

We can also write this as :

⇒ P ( x ) = (x)² - (2)²

Identity : a² - b² = (a + b)(a - b)

⇒ P ( x ) = (x + 2)(x - 2)

To find the zeroes, P ( x ) = 0

•°• 0 = (x + 2)(x - 2)

Using Zero Product Rule

⇒ (x + 2) = 0 and (x - 2) = 0

⇒ x = - 2 and x = 2

Hence, the zeroes are 2 and - 2.

Answer 2

Answer:

The answer is 2 and - 2

Step-by-step explanation:

The explanation is in the picture.

The graph crosses the x axis or abscissa at (2, 0)and (-2,0) points.

2 and -2 are the zeros of the function.

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