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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)
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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 = ???
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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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