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How come my answer is wrong? It says it’s equal to the correct answer but it’s not the right answer.

How come my answer is wrong? It says it’s equal to the correct answer but it’s not-example-1
User Henry Zhu
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\begin{gathered} (2.7x^3-5.5x^2-2)-(5.5x^3-7.9x^2+\text{ 2) }\ldots..\text{remove parenthesis } \\ =\text{ 2.7}x^{3\text{ }}-5.5x^2-2-5.5x^3+7.9x^2\text{ -2} \\ =\text{ (2}.7x^{3\text{ }}-5.5x^3)-5.5x^2+7.9x^2-2-2^{} \\ =\text{ }-2.8x^3+2.4x^2-4^{} \end{gathered}

User Dcaz
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