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Hello all. I posted a few days ago about my math requirement for a BS at Liberty U. I ended up going with SDC's Math 102 (College Mathematics). I have a question for anyone that has taken a math course with SDC.
The instructions say to have a scientific calculator. Do they not provide one on screen? Also, there one or two chapters I am struggling with; namely quadratic equations and squaring the root. I feel pretty confident on the other subjects to far (I am through 50% of the course). Do you think having a couple weak areas is something I can overcome and still pass the final? I'll need a 55%. Also, what is the proctored exam like? I've never taken an online proctored exam before. Thanks for your help!
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I took one math course and one statistics course through SDC and both times I had to supply my own calculator.
You could be fine going into the final with a weak area or 2 but it really depends upon how the question breakdown is for your specific class. I'd advise to supplement your learning on your weak areas. Khan is a good general go to source for finding videos to help out with different math problems. There are also apps and websites that can help you with individual problems.
The proctored final is straight forward. Just make sure you follow the instructions for scanning your room, desk and materials.
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For quadratic equations, my recommendation is to memorize the quadratic formula and use it every time because it's the one method that works for EVERY quadratic equation. Other methods might be faster for some problems, but they don't work every time.
I'm not sure what is meant by "squaring the root" as I haven't seen that terminology before, but I currently have an active subscription so I'll try to look at it later and see if I have any tips for that.
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It's a method taught in algebra that moves the constant over to the other side and you square root both sides to get the answer. The quadratic equation can be done faster for simpler problems unless you get larger numbers.
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Gotcha, if I'm thinking of the same method I've always heard it called "completing the square" rather than squaring the root.
OP, is there something in particular you're struggling with in terms of using this technique?
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03-19-2019, 04:39 AM
(This post was last modified: 03-19-2019, 04:41 AM by Supermind.)
My suggestion is to use the quadratic equation only when an equation cannot be perfectly reduced to factors. For example:
x^2 - 5x + 6 can be perfectly reduced to x^2 + (-3x - 2x) + (-3 . -2). It might be easier and faster to calculate this way. Just look for two numbers whose sum or difference is the coefficient of the central term, and product is the last term. And watch out for the + or - signs. If there is no coefficient, it is assumed to be 1.
But if the equation were: x^2- 5x + 7, then there are no two real numbers, whose sum/difference is 5, and product is 7. Use the quadratic equation in this case, as that is the only way out.
Also, if there are coefficients to each of the variables, see if you can reduce the whole equation by dividing with a common number, before you factorize further. Eg: 3x^2 - 12x + 18 = 0 can be reduced to x^2 - 4x + 6 by dividing both sides by 3.
That's some tips for simplification that I am able to offer. Hope it helps.
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Thank you all for your responses. I ended up studying the more difficult concepts with Khan Academy. I passed the final exam yesterday with an 84%!
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Great! Congratulations.
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That is awesome! Congratulations!
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