Observe the figure:

Area of the rectangle is .

Length of the rectangle is and width of the rectangle is .

Standard form of the area of the rectangle is .

Find -value.

                                             (Formula for area)

                         (Substitute , and )

                            (Multiply)

       (Subtract from each side)

                            (Apply additive inverse property: )

               (Write as a pattern)

          (Group with the factors)

              (Factors of GCF)

                        (Take out common factor)

or                          (Apply zero productive property)

The value of is or .

Dimensions cannot be negative.

Hence consider .

Length of the rectangle is .

Width of the rectangle is .

The value of is or .

Length of the rectangle is .

Width of the rectangle is .