For this case we must simplify the following expression:
[tex](2x ^ 3 + 6x-1) + (3x ^ 2-7x)[/tex]
We eliminate the parentheses taking into account that:
[tex]+ * + = +\\+ * - = -[/tex]
So, we have:
[tex]2x ^ 3 + 6x-1 + 3x ^ 2-7x =[/tex]
We add similar terms taking into account that:
Different signs are subtracted and the sign of the major is placed:
[tex]2x ^ 3 + 3x^2-x-1[/tex]
Answer:
[tex]2x ^ 3 + 3x^2-x-1[/tex]
