Help, please ! This is the one of the things I'm confused with. DOING 15 POINTS

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual