38.2k views
3 votes
Factorise this equasion
X^2-5

User Zieglar
by
7.4k points

1 Answer

1 vote

Answer:

(x -
√(5) )(x +
√(5) )

Explanation:

x² - 5 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

x² - 5

= x² - (
√(5)

= (x -
√(5) )(x +
√(5) )

User Eric Nicholson
by
8.9k points

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