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Mathematics 12 Online
OpenStudy (anonymous):

Simplify the following expression. 2x − 8y + 3x^2 + 7y − 12x 3x^2 − 14x − y 3x^2 − 10x − y 3x^2 − 10x − 15y 3x^2 + 10x − y

OpenStudy (ivettef365):

just combine like terms

OpenStudy (ivettef365):

like for example you have 2x and -12x, so what is 2x-12x = ??

OpenStudy (ivettef365):

then combine the number with the y's and add

OpenStudy (anonymous):

but i need an answer

OpenStudy (ivettef365):

well I'm giving you clue how to get to the answer, I just can't give you the answer

OpenStudy (anonymous):

but i dont know how to do this.

OpenStudy (ivettef365):

do you know what 2x - 12x equal to ???

OpenStudy (anonymous):

-10x

OpenStudy (ivettef365):

good job, so now do -8y + 7y

OpenStudy (anonymous):

-1

OpenStudy (ivettef365):

actually it s -1y which is the same as -y

OpenStudy (anonymous):

i meant that forgot the y tho

OpenStudy (ivettef365):

so now you have the 3x^2 (which you can not combine with anything so it stays the same) then you have -10x and you have -y so what is the answer

OpenStudy (anonymous):

c

OpenStudy (ivettef365):

why c, ????

OpenStudy (ivettef365):

which one have 3x^2-10x-y ??

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