exam
Maths Puzzle
Numerical Ability
Factor completely over the rational numbers: x^2-72
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exam Other Question
log5+logx=2
5x-4(x+9)=2x-3
5x-4x+36=2x-3
1x+36=2x-3
1x+36-1x=2x-3-1x
36=1x-3
36+3=1x-3+3
39=1x