Sweden | A Nice Algebra Problem | Math Olympiad
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15 күн бұрынHello My Dear KZfaq Family 😍😍😍
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@willberry3199 11 күн бұрын
There are three solutions. It is valid for "t" to be negative because we are solving for x, not for its square root. Continuing that third line we end up with x = (3 - sqrt(5)) / 2 which can be verified in the original equation without any square roots of negative numbers.
@seringoften 11 күн бұрын
can you explain it more simply sorry i don't understand to that 😅
@willberry3199 11 күн бұрын
@@seringoften In the video he stopped calculating one solution after finding t was negative, but he should have kept going, it leads to a third valid solution.
@gloystar 10 күн бұрын
Solved it before playing the video in exactly the same way. Turned out the solutions were (zero) and the (square of the golden ratio). Great video.
@napoleonjr.gaquing379 12 күн бұрын
Squaring of the RHS is incorrect.
@Nguyễn-j9q 12 күн бұрын
X=0
@Patrik6920 12 күн бұрын
and 2x = 3+√5
@Baltie3 9 күн бұрын
This is not an olympiad level.