- Simplify (2 + square root of 5) (3 - square root of 5)?

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Type the ordered pair 2x + 5y = -9
3x - 4y = -2? Does copper have positive or negative ions? Please help! how earth's history can be interpreted by geologic time scale? If one pair of solar eclipse glasses are not strong enough, will wearing three pair be OK? Sally bought 6 plums for $10 and sold them at $2 each. What is her selling price as a percentage of her cost price?