molliv7
Answered

What's the answer to this equation?? 20 points


t^2-(t+5)^2-20=0

Verified Answer :

charstar

t^2-(t+5)^2-20=0
t^2-(t+5)^2=20
t^2-(t+5)(t+5)=20
t^2-(t^2+5t+5t+25)=20
t^2-(t^2+10t+25)=20
t^2-t^2-10t-25=20
-10t-25=20
-10t=45
t=-4.5

Hope this helps :)

baabaagreysheep

Here's the answer! Let me know if you can't read it
I wrote the bracket (t + 5)^2 as (t - 5)^2 but it's alright because I got the answer incorrect on the paper, but it is correct with +5... if that makes sense?

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