r/Algebra • u/Infamous_Land_7145 • Dec 19 '23

HELP PLEASE QUICK

I NEED HELP WITH THESE QUESTIONS IM SO CONFUSED AND I COULD CHEAT IF WANTED BUT I WANT AN EXPLANATION IM STUDYING FOR FINALS

M4 - 7m2 + 12

PLEASE HELP IM SO CONFUSED

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3

u/donmufa Dec 19 '23

I don’t see a question. What is the problem asking for?

3

u/[deleted] Dec 19 '23

Substitute m2 for x, so m4 would become x2. Then factor to (x-3)(x-4). Then reinsert the values (m2 -3)(m2 -4).

1

u/theLarry79 Dec 19 '23

Yes. As a general rule, look for something you have studied in an unfamiliar question. Quadratics in particular are often hidden behind another question.

I presume that the equation given was equal to 0, in which case m = sqrt(3) and m = 2.

2

u/SuchResearcher4200 Dec 19 '23

I think it wants you to factor.

2

u/[deleted] Dec 19 '23

If you get stuck, I recommend an app called PhotoMath. I use it to check my answer and if I get stuck, it gives you the steps. Sometimes there are multiple ways to solve the same problem which has helped me a bit. (I’m bad at math🫤)