11th Algebra
I am not getting the approach for these 4 questions any help in any question would be appreciated
9 Replies
@Apu
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Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.For the first one.
The second one is an identity: $x^{2}+y^{2}+z^{2}-xy-yz-zx=\frac{(x-y)^{2}+(y-z)^{2}+(z-x)^{2}}{2}$
SirLancelotDuLac
Thanks i understood this onee
For the third one, divide first equation by 16 and divide second equation by 8. Then take x/4 = a and y/2 = b substitutions