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asnaseer Group TitleBest ResponseYou've already chosen the best response.1
hint: Expand \((x+y)^2\)
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
i'm sorry i'm still lost
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
what can you say about the number \((x+y)^2\)? can it ever be negative?
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
remember x, y E R
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
well i thought anything squared would be true bit i can't get the two brackets the same as i can't get 3y squared
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
try and first expand \((x+y)^2\) and then see what else you need to add to this in order to get your original expression of \(x^2+2xy+3y^2\)
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
so the answere would be (x+y)^2 + y^2
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
not quite  what do you get when you expand \((x+y)^2\) ?
 2 years ago

malevolence19 Group TitleBest ResponseYou've already chosen the best response.0
(x+y)^2+2y^2
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
x^2 + 2xy + y ^2
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
correct  now what do you need to add to this in order to get to your original expression?
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
2y to be squared
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
so we end up with:\[x^2+2xy+3y^2=(x+y)^2+2y^2\]now  can you see that this can never be negative?
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
ok thanks while i have you i have to do this using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
yw :) could you please post that as a separate question. thanks.
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
using the same axsis and scales graph the functions f(x)=x and g(x)= 2x  3
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
< I meant post in the list to the left
 2 years ago

samnatha Group TitleBest ResponseYou've already chosen the best response.0
oh ok sorry
 2 years ago

asnaseer Group TitleBest ResponseYou've already chosen the best response.1
np :) it just helps posting each question separately as others can then see each question more easily and also learn from them. :)
 2 years ago
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