Question

Solve for x in the quadratic equations below.

Answer 1

`23) {x}^(2) = 196 \\ ⇒x = √(196 ) \\ ⇒x = + 16 \: \: \: or \: - 16 \: \: \: \: \: \\ \\ 24){x}^(2) - 10 = 39 \\ ⇒ {x}^(2) = 49 \: \: \: \: \: \: \: \: \\ ⇒x = √(49 ) \: \: \: \: \: \: \\ ⇒x = + \: 7 \: \: \: \: or \: - 7 \\ \\ 25)5 {x}^(2) - 80 = 0 \\ ⇒5 {x}^(2) = 80 \\ ⇒ {x}^(2) = (80)/(5) \\ ⇒ {x}^(2) = 16 \\ ⇒x = √(16) \\ ⇒x = + 4 \: \: or \: \: - 4`

Explanation:

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