Question

IF BOTH X-2 AND ARE FACTOR OF PX2 + 5X + R THEN SHOW P= R.​

Answer 1

Given, f(x) = px^2+5x+r  and factors are x-2, x-1/2

Substitute x = 2 in place of equation, we get

= p*2^2+5*2+r=0  

=  4p + 10 + r = 0   ------------  (i)

Substitute x = 1/2 in place of equation.  

 p/4 + 5/2 + r = 0

 p + 10 + 4r = 0  -------------------  (ii)

On solving (i),(ii) we get

4p+r=-10 and p+4r+10=0

4p+r=p+4r

3p=3r   

p = r.

Answer 2

Step-by-step explanation:

18. The displacement of a body in 't'

seconds is shown as x = 3 + 2 + 3 t^2m.

Find the acceleration.

1) 0.25 m-s-2 2) 0.5 m-s-2

3) 0.75 m-s ?

4) 1 m-s-2