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If you put a second-degree equation into the form

ax2 + bx + c = 0,

then

x = (-b ± (b2 - 4ac)½) ÷ 2a.

Remember to follow the proper order of operations (parentheses first, etc.). Note that the ± will result in two answers, as should be expected from a second-degree equation. If you are doing a word problem, substitute each answer into the problem to see if one is or both are ridiculous (I call it the ridiculous test; it saved me several times). Also remember that raising something to the power of ½ is the same as calculating its square root. I hope this is what you're looking for. Good luck.

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13y ago

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