exam Maths Puzzle Numerical Ability

How do you solve the equation? Please help thanks
(x + 2)(x-4) = 0

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exam Other Question

what does my teacher mean when she says to solve an equation in one variable and to solve products;quotients? Problems from a sample final..studying for finals..

Solve each equation

log(7x+8)= 2 log x

Thank so much!!!!