Question

Factorise 4s^2-4s+1.

Answer 1

$4s {}^{2} - 4s + 1 = 0 \\ 4s {}^{2} - 2s - 2s + 1 = 0 \\ 2s(2s - 1) - 1(2s - 1) = 0 \\ (2s - 1)(2s - 1) = 0 \\ s = 1 \div 2 \: or \: 1 \div 2$

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Answer 2

Answer:

s= 1/2, s= 1/2

Step-by-step explanation:

4s^2 - 4s + 1

4s^2 - 2s -2s +1

2s(2s-1) - 1( 2s- 1)

2s-1=0 , 2s -1 = 0

s = 1/2 , s = 1/2

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