Question

(
vi) 100x2 - 20x +1 = 0​

Answer 1

${100x}^{2} - 20x + 1 \\ = {100}^{2} - 10x - 10x + 1 \\ = 10(10x - 1) - 1(10x - 1) \\ = (10x - 1)(10x - 1) \\ = {(10x - 1)}^{2}$

Answer 2

Step-by-step explanation:

$100 \times 2 - 20x = 0 \\ 200 - 20x + 1 = 0 \\ 201 - 20x = 0 \\ - 20x = - 201 \\ x = \frac{201}{20} \\ alternate \: form \: \\ x = 10 \times \frac{1}{20} ,x = 10.05$