Simplify: 10√11(4√6+7) HEL

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

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

What are two numbers that have a sum of 15?