Question

1. Find the value of: x² - 1/5 at x= -1.​

Answer 1

Answer:

$let \\ f(x) = x {}^{2} - \frac{1}{5}$

$f(x) = 1 - \frac{1}{5}$

$f(x) = \frac{4}{5}$

Answer 2

${x}^{2} - \frac{1}{5} \: \: \: \: \: x = - 1 \\ { - 1}^{2} - \frac{1}{5} \\ 1 - \frac{1}{5} = > \frac{5 - 1}{5} = > \frac{4}{5}$

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