precalculus question

[zenith burrow]

How do I solve 8? I have gotten to 2(x^2-420)=0, but I don’t know where to go from here.

[zenith burrow]

Also I shouldn’t be using decimals

[lusty canopy]

What were all the steps you took?

if you wrote out the math that was described in the paper

You get this

Oh i probably should've asked if you knew pythagorean theorem

[inland hazel]

bro

[inland hazel]

wrong

this is a parabolic path

oh sorry , i solved the q7

[indigo marten]

.close

[finite ginkgo]

Solved

Post marked as solved by @indigo marten.

Use .unsolved if this was a mistake.