Resolve into factors 4x- 25

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Solve for x where 0 equation: cot^2x+2cotx+1=0

Deena is planting two rectangular gardens. one garden is 3.67 feet by 8.56 feet, and the other garden is 3.67 feet by 7.45 feet. which expression does not respresent the total area in square feet of the two gardens