Answer:
d is the answer
Step-by-step explanation:
B.
[tex]?=(10x^{2} -6x+1)-(5x+7)-(8x^{2} -4x)[/tex]
[tex]=10x^{2} -8x^{2} -6x-5x+4x+1-7[/tex]
[tex]=2x^{2} -11x-4x-6[/tex]
[tex]=2x^{2} -7x-6[/tex]
Hope this helps
