Question

$7a ^{2} - 8a \: + 1$
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Answer 1

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Answer 2

7a² - 8a + 1

7a          - 1

 a          - 1

-7a - a = -8a

(7a - 1)(a - 1) = 0

7a - 1 = 0         a - 1 = 0

7a =  1             a  = 1

a = 1/7

CS = (1/7; 1)

Eternamente axllxa