Question

the set of all solutions of the
quadratic equation x²= 25​

Answer 1

Answer:

${x}^{2} = 25 \\ \\ = > x = + \: or \: - \sqrt{25} \\ \\ = > x = + \: or \: - 5$

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Answer 2

Answer:

How do you solve the quadratic equation x^2 – 25 = 0?

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Given quadratic equation is

x² - 25 = 0

We can write in another way ,

x² - 5² = 0

We know the the basic formula

a² - b² = (a-b) (a+b)

So , we can write

x² - 5²= 0

(x-5) (x+5) = 0

Hence x = ± 5

The roots of given quadratic equation is ±5.

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