Which factors compose the least common denominator for this difference? 11x/x^2+4x-12 - 7/2x^2-4x (x+2)

(x+2)
(x-2)
2x
(x-4)
(x+6)
(x-6)

How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.