Let n be the amount of time it takes william to cut the lawn. Then Shelly takes n-2 hours. So: 1/n+1/n-2=1/3 3(n-2)+3n=n²-2n 6n-6=n²-2n n²-8n+6=0 Using the quadratic formula, we get a positive value of 7.1623 hrs as the amount of time william takes working alone, and 5.1623 as the amount of time Shelly takes working alone ☺☺☺☺
Only x-intercept because if you want to know about x-intercepts so y will be zero (y=0) then 0 =4x^2 -12x + 9 0=(2x-3)(2x-3) 0=2x-3 so x=3/2 that is x-intercept