Solve the following equations:

(i) 3 - 4x² = -85

(ii) -5x² = -500

(i) 3 - 4x² = -85

(ii) -5x² = -500

3 - 4x² = -85

-4x² = -88 {subtracted 3 from both sides}

x² = 22 {divided both sides by -4}

**x = ±√22**{took square root of both sides}

-5x² = -500

x² = 100 {divided both sides by -5}

**x = ±10**{took square root of both sides}

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