Question

factorise 5 - 20x^2. ​

Answer 1

This is correct answer

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Answer 2

Answer:

5(1+2x)(1-2x)

Step-by-step explanation:

5-20x^2

=5(1-4x^2) taking 5 common and then using formula of( a^2-b^2)

=5(1+2x)(1-2x)