Answer:
[tex]6x^{2} - x + 7[/tex]
Step-by-step explanation:
Eliminate redundant parentheses
[tex](4x^{2} - 6x + 8) + (2x^{2} + 5x - 1)[/tex]
[tex]4x^{2} - 6x + 8 + 2x^{2} + 5x - 1[/tex]
Subtract the numbers
[tex]4x^{2} - 6x + 8 + 2x^{2} + 5x - 1\\\\\\4x^{2} - 6x + 7 + 2x^{2} + 5x[/tex]
Combine like term:
[tex]4x^{2}-6x+7+2x^{2}+5x\\\\6x^{2} -6x+7+5x[/tex]
Combine like terms:
[tex]6x^{2} -6x+7+5x\\\\6x^{2} -x+7[/tex]
