Perfect square

[flossit]

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Hi, do we need to know how to solve perfect square for the DAT? Something like 3x^2-5x-7=0

 

[LuckBloodandSweat]

Probably. It's pretty easy

 

[WheatLom]

yea you should, however it wouldn't be complex complex. you should be able to recognize and execute the calculation though and do it quickly.

 

[flossit]

Can anyone give the easiest and shortest way how to solve these perfect square problems.

 

[LuckBloodandSweat]

Can anyone give the easiest and shortest way how to solve these perfect square problems.

Lol post one and I'll solve it when I'm not dying over finals.

 

[flossit]

Lol post one and I'll solve it when I'm not dying over finals.

Hi, great, this one: 3x^2-5x-7=0

 

[DAT Destroyer]

Hi, do we need to know how to solve perfect square for the DAT? Something like 3x^2-5x-7=0

Yes. Very simple ones, nothing involving the quadratic equation. It's usually an equation that you can easily factor.

 

[asdf99]

Hi, great, this one: 3x^2-5x-7=0

I'm super rusty with math, but I'm not sure if that polynomial is solvable without a calculator? I think the roots would be non whole numbers which I think might be outside the scope of the dat?

That said, my main man LBS did way better than me in QR so wait for him for now 🙂

 

[LuckBloodandSweat]

I don't think you'd be asked this @flossit

 

[Bersabeh]

Hi, do we need to know how to solve perfect square for the DAT? Something like 3x^2-5x-7=0

this is easy to solve answer should be between 2.57 and -0.9 for which you have to choose the positive.

 

[LuckBloodandSweat]

this is easy to solve answer should be between 2.57 and -0.9 for which you have to choose the positive.

is it easy to get to that without a calc i haven't bothered doing this question lol

 

[flossit]

Thank you all for your input!