Question

how do i Subtract and simplify: (11x2 + 7) – (6x2 + 3x – 3)

Answer 1

You have to remember that:

$(-)*(+)=(-)$

and

$(-)*(-)=(+)$

$(11x^2+7)-(6x^2+3x-3)=11x^2+7-6x^2-3x+3=5x^2-3x+10$