Find the missing side length of each right triangle

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10