Branda and laurie have rectangular shaped backyards. branda's yard measures 35 feet by 90 feet. laurie's yard measures 40 feet by 65 feet. how much greater is the area of branda's yard than laurie's yard? 40 ft²

40 ft

125 ft²

550 ft²

2600 ft²

21

step-by-step explanation:

11279

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.