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What is: Factorise 7−x^2

What is: Factorise 7−x^2
asked 223k views
10 votes
What is: Factorise 7−x^2

asked
User Harden
by
7.9k points

1 Answer

5 votes

Answer:

(
√(7) - x )(
√(7) + x )

Explanation:

Using the difference of squares

a² - b² = (a - b)(a + b) , then

7 - x²

= (
√(7) )² - x²

= (
√(7) - x)(
√(7) + x)

answered
User Prathik Kini
by
8.6k points
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