What is the leading coefficient of the polynomial 5x10 + 4x12 + 4x8 + x4 - x?

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Write the expression 7x^3-28xy^2 as the product of 3 factors