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Add: (3x2 – 4x + 8) + (-x2 – 2x – 8) ​

Sagot :

[tex](3 {x}^{2} - 4x + 8) + ( - {x}^{2} - 2x - 8) \\ 3x^{2} - 4x + 8 - {x}^{2} - 2x - 8 \\ 3 {x}^{2} - {x}^{2} - 4x - 2x + 8 - 8 \\ 2 {x}^{2} - 6x[/tex]