Look at triangle lem. write an expression that can be used to find the measure of angle m?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm