The Student Room Group

Maths Alevels

The question is below
received_631022621179970.jpeg
Bring all of the terms to one side and then factorise and set equal to zero
ex+e2x=e3xe^{x}+e^{2x}=e^{3x}

so ex+(ex)2=(ex)3e^{x}+(e^{x})^{2}=(e^{x})^{3}

you can let ex=ye^{x}=y if that's easier to "see", which would then read:

y+y2=y3y+y^{2}=y^{3}
Reply 4
Avatar for davros
davros
16
Original post by Abdullah11145
received_631022621179970.jpeg

Note that e^x can never be zero (think about why not!) so you can actually divide by something to simplify here :smile:

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you