By decreasing each side of a rectangle by 1 unit, the area decreased from 60 square feet to 44 square feet. find the perfect decrease in area.

Decrease in area would be 26.67%

Step-by-step explanation:

By decreasing each side of a rectangle by 1 unit area of the rectangle decreases from 60 square feet to 44 square feet.

So decrease in area = 60 - 44 = 16 square feet.

Percentage decrease in the area will be =

                                             =

                                            =

                                            = 26.67%

Decrease in area would be 26.67%

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1