(6) Solve the following equations with justification using properties of real numbers (i) 3x - 4= 7 (ii) 4x3 = x2 (iii) 4x2-1 = 5 (iv) (x - 3) (x + 4) = 0
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1. x = 11/3
2. question not clear
3. question not clear
4. (x - 3) (x + 4) = 0 == x( x + 4) - 3(x + 4) == x square + 4x - 3x - 12 == x square + x - 12 = 0
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