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Mathematics 9 Online
OpenStudy (anonymous):

Can SOMEONE PLEASE PLEASE HELP ME ! I AM STRESSING (0.07x^3-0.02x^2+0.03x)-(0.05x^3+0.07^2-9)

jimthompson5910 (jim_thompson5910):

First distribute to get (0.07x^3-0.02x^2+0.03x)-(0.05x^3+0.07^2-9) 0.07x^3-0.02x^2+0.03x-0.05x^3-0.07^2+9

jimthompson5910 (jim_thompson5910):

now combine like terms

OpenStudy (anonymous):

0.12x^3-0.05x^2+0.03+9 is this correct

jimthompson5910 (jim_thompson5910):

no it is not

jimthompson5910 (jim_thompson5910):

0.07x^3-0.05x^3 = ???

OpenStudy (anonymous):

0.02x^3-0.05x^2+0.03+9

jimthompson5910 (jim_thompson5910):

-0.02x^2-0.07x^2 = ??

OpenStudy (anonymous):

0.09x^2

jimthompson5910 (jim_thompson5910):

-0.09x^2

jimthompson5910 (jim_thompson5910):

so the final answer is 0.02x^3 - 0.09x^2 + 0.03x + 9

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