Robin has red 3/4 of a book mark said he had read 1/2 as much as robin what fraction of the book has mark read

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

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.

State one method by which you can recognize a perfect square trinomial.