exam Maths Puzzle Numerical Ability

I need help solving this logarithmic equation:
log(x-1)+log(x+2)=2

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exam Other Question

as part of a promotion, a local bank invites its customers to view a large sack full of $5, $10, and $20 gold pieces, promising to give the sack to the first person able to state t How do you create a graph showing different coordinates.

I dont know where to look on how to create a graph.

Please let me know step by step, so I can learn how to do this.