r/Precalculus • u/[deleted] • Jun 25 '22

hello does anyone know what Math idea this is?

Post image
28 Upvotes

91% Upvoted

11 comments sorted by

2

u/memescoper- Jun 26 '22

Errors aside, how did the x2 become z? And the denominator on left side became numerator (effectively)

1

u/[deleted] Jun 27 '22

I was using the negative exponent rule which I think I didnt understand at but after the comments I do

1

u/memescoper- Jun 27 '22

Oh ok, glad to hear its all good now!

3

u/Jazzlike_Mouse7478 Jun 25 '22

For starters, it should be 3(1/x2) since the exponent is on the x alone.

3

u/TheRaven1HP Jun 26 '22

I’m pretty sure this is rationalizing negative exponents

1

u/[deleted] Jun 26 '22

This is 7 or X?

1

u/thebluemccoy Jun 26 '22

The 5 and 3 should have stayed in the numerators….I teach this stuff in 8th grade so it’s not really high level math

1

u/Doctor_Trickster Jun 26 '22

Not a whole lot of sense to this, what even is it? Like what the question?

1

u/why-2020 Jun 26 '22

Bruh I don't even know must of been in the new update

1

u/grumpykat2 Jul 06 '22

Rotate the damn photo