Can you Solve Oxford University Admission Interview Question ?✍️🖋️📘💙

[@part6133]

Should be solved as 4 within 3/4 a minute

[@Nuncamasusado]

Excelente ejercicio.

[@superacademy247]

I'm glad you found it challenging! 🔥🥰✅💕Gracias! 💯🙏🤩💕

[@에스피-z2g]

rtx=t
t^3+t-10=0
(t-2)(t^2+2t+5)=0
x>0, t>0
t=2, x=4

[@daniellerosalie2155]

I see it as "4"

[@JohnSmith-fk9gu]

The kid who did all that should not be at Oxford

[@peterotto712]

Cumbersome waste of paper!

[@ChavoMysterio]

(√x•√x•√x)+√x=10
Domain: x≥0
(√x)³+√x=10
Let y=√x
y³+y=10
y³+y-10=0
y³-8+y-2=0
(y-2)(y²+2y+4)+1(y-2)=0
(y-2)(y²+2y+5)=0
y²+2y+5=0
y²+2y+1=-4
(y+1)²=-4
|y+1|=2i
y+1=±2i
y=-1±2i
y=-1+2i
√x=-1+2i
x=(-1+2i)²
x=-3-4i ❤
y=-1-2i
√x=-1-2i
x=(-1-2i)²
x=-3+4i ❤
y-2=0
y=2
√x=2
x=4 ❤

[@nantesloire]

Mein Gott, mein Gott... wie ein kleines Kind.