A Tricky Maths Exam Question | Solve for k
4.9M views · Nov 14, 2025 · Education
Comments · 3.3K
@AH-hm5js · 10 months ago
I got -2 without quadratics or anything too fancy.
3K
@Sarrge1 · 9 months ago
I got -2 with a guessing and substitution for a few seconds.
138
@SarahDoesSass · 6 months ago
This is mental math. You immediately know k is negative when you see the resulting constant is a positive number.
245
@alohayzu3213 · 9 months ago
Coming to the comments and seeing so many smart people laughing it off scared me
286
@mikec3344 · 4 months ago
Good lord. 10 minutes into it and I had completely forgotten the original problem, lol
49
@One_Sophist · 3 months ago (edited)
-2. <a href="https://www.youtube.com/watch?v=IIHAJUlrBXM&t=13">0:13</a> seconds in. ... yeh, i guess i could provide a proof.
26
@beatset33 · 10 months ago
I solved it just seeing the thumbnail. That's the easy one
2.5K
@_-josie-_ · 10 months ago
I’m an art school student, watching this at 4am and nodding my head like “mhm, yea, oooh, that’s exactly what I would’ve done!” (I barely understood anything)
1K
@thehifiheadroom · 6 months ago
Used this for figuring out the change given in the grocery store
10
@anaXOOOO · 9 months ago
this is the perfect ragebait for JEE students T-T
619
@AbouTaim-Lille · 9 months ago
X= -2 is an easy solution. Devide by X+2 and solve a 2nd degree equation to get the other 2 solutions.
15
@Hckr_lit · 6 months ago
The best way was the polynomial of degree 3 with P(-2)=0
11
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