Use the distributive property to multiply. then, if possible, simplify the resulting expression.
-1(a+b)

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p