Question

Find the value of expression 100-10x² for x=​

Answer 1

Answer:

$100 - 10x ^{2} = 0 \\ \\ = > - 10x ^{2} = - 100 \\ \\ = > 10 x^{2} = 100 \\ \\ = > x ^{2} = \frac{100}{10} \\ \\ = > x ^{2} = 10 \\ \\ = > x = + \: or \: - \sqrt{10}$

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