3x^-2 can be written
3/x^2 because x^-2 is = 1/x^2
The answer for -2.5x-10=40 would be:
x = - 20.
You don't simplify rational numbers, but sometimes you can simplify a fraction.
The way to do that is to divide the top and bottom by their greatest common factor.
The greatest common factor of 57 and 69 is 3 . When you divide the top and
bottom by 3 , you have 19/23 . That's the simplest form of that particular fraction.
h(t) = -16t^2 + vt + 5
h(3) = 131 ft
h(3) = -16(3)^2 + 3v + 5 = 131
3v = 270
v = 90 ft/s
Answer:
Solution is x=-3 and x =1, because that is zero od function y=-x^2-2x+3
