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How to factor 2x^2+5x-3?

I have the question factor this problem, 2x^2+5x-3. And I was told to multiply 2 by -3, which the answer is -6. And then add the factors of -6 to get the middle number. Which -1 plus 6 is 5 for...

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I am having problems understanding when to use ratio or interval. Please help me understand whether it is ratio or interval and why. 1. What does re-filling the gas tank on your motorbike depend...

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