Question

The width of a rectangle is the length minus 2 units.The ares of the rectangle is 48 units.What is the width, in units ,of the rectangle

Answer 1

x(x - 4) = 12

x2 - 4x = 12

x2 - 4x - 12 = 0

(x - 6)(x + 2) = 0

x - 6 = 0

x = 6

If the length is 6, the width must be 2.

Explanation: