Hey there!
3x(x - 2) + 7x - 1
DISTRIBUTE 3x WITHIN the PARENTHESES
= 3x(x) + 3x(-2) + 7x - 1
= 3x^2 - 6x + 7x - 1
COMBINE the LIKE TERMS
= (3x^2) - 6x + 7x - 1
= 3x^2 + 1x - 1
= 3x^2 + x - 1
Therefore, your answer is: “3x^2 + x - 1” OR you could say “3x^2 + 1x - 1” because they are both equivalent to each other
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)