Anonymous

# How do you solve this and explanation please?

### 3 Answers

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- rotchmLv 73 months ago
The area is (x+3)*x which must equal 10.

You can try a few good guesses: If x = 0 do you get 10?

If x = 1...? Etc.

Or algebraically: expand (x+3)*x to get x² + 3x. Thus x² + 3x = 10. Rewrite as

x² + 3x - 10 = 0.

Now just solve this by factoring or quadratic eqs.

Done!

Hopefully no one will spoil you the answer. That would be very irresponsible of them.

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