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Mathematics 9 Online
OpenStudy (anonymous):

Simplify: (5x2 + 3x + 4) + (2x2 − 6x + 3) 7x2 + 9x + 7 7x2 + 3x + 7 7x2 − 3x + 1 7x2 − 3x + 7

OpenStudy (anonymous):

Please help?

Parth (parthkohli):

Remove the parentheses when they are of no use.

hartnn (hartnn):

Add like terms like here add 5x^2 and 7x^2 what do u get ?

OpenStudy (anonymous):

12x^2?

hartnn (hartnn):

yup, good....now which are other like terms u see ?

OpenStudy (anonymous):

3x and 6x which is 9x

hartnn (hartnn):

oh, wait, it was 5x^2 and 2x^2 which becomes 7x^2 ok ?

OpenStudy (anonymous):

yes sorry haha

hartnn (hartnn):

and there is 3x and -6x which gives u -3x got this ?

OpenStudy (anonymous):

oh yeah

hartnn (hartnn):

lastly what is 4+3?

OpenStudy (anonymous):

7 :)

hartnn (hartnn):

wow ! u are smart :) so its the last option, isn't it ?

OpenStudy (anonymous):

Thanks so much!!! :) I understand how to do this now!! Yes, And Again thanks!

hartnn (hartnn):

welcome :)

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