Factories:
x(x+1)-y(y+1)

Me what is the value of x? showing work would be appreciated - ! : )

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0