The angle of elevation of an aeroplane from a point 'a' on the ground is 60.after a flight of 30 seconds, the angle of elevation changes to 30.if the plane is flying at a constant height of 3600? 3 then find the speed of the plane in km/hr

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

answer: 5100 just subtract

step-by-step explanation:

answer. d.289 hope that

total of apples - take away four

6-4 = 2

answer is 2 apples