1 Answer

Cesarnicola · Answer 1 · 2021-07-03T08:06:54+0000

Answer:

See explanation

Explanation:

Let the given equation be:

$5 {x}^(2) - 400 = 0$

This implies that:

$5 {x}^(2) = 400$

Divide through by 5 to get;

${x}^(2) = 80$

Take square root to obtain:

$x = \pm √(80)$

This implies that

$x = \pm4 √(5)$

$x = - 4 √(5) \: or \: x = 4 √(5)$

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