Given that AB is a line segment and the angle y = 45°, work out the value of the angle marked x.​ pls help

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

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

Bring the fraction a/a-4 to a denominator of 16-a^2