Simplify -3 (n - 7) using the distributive
property

Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(−6x − 3) linear function; linear term: −21x; constant term: −6 linear function; linear term: −18x2; constant term: −6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: −6 quadratic function; quadratic term: −18x2; linear term: −21x; constant term: −6

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Can someone tell me if this is perpendicular? !