Can anyone me with this?
4x^2-16x-84=0
don't tell me the answer, just show me step-by-step how to do it.

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?