Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Here is 1 example. Mrs. Jacinto asked a carpenter to construct a rectangular bulletin board for her classroom. She told the carpenter that the board’s area must be 18 square feet. Suppose the length of the board is 7 ft. longer than its width.

Area = l x w 18 = x(x+7) 18 = x²+7x 18 + 49/4 = x²+7x+49/4 this is a quadratic equation.

and there are other more real life situation w/ uses quadratic equation but the solution is more complicated.

The length of a swimming pool is 8m longer than its width and the area is 105m². Given: A=105m² l=w+8 Solution: A= lw 105m²=w(w+8) 0=w²+8w-105 A square garden will be planted by a border of flowers. The border will be of the same dimensions around the entire garden and the has an area of 81m². Given: A=81m² Solution: A= s² 81m²=s² 0=s²-81 The width of the blackboard is 4 less than its width. The blackboard has an area of 35m². Given: A=35m² w=l-4 Solution: A=lw 35m²=l(l-4) 0=l²-4l-35