Question

If I were to expand (3-t)^3 is it 3^3+3(3^2-t)+3(3-t^2)-t^2

Answer 1

no it's
\[ 3^3-t^3+3*3t^2-3*3^2*t\]
\[= 27-t^3+9t^2-27t\]

Answer 2

Thank you. I was confused on the parentheses.