Answer:
The following are the solution to the given points:
Step-by-step explanation:
Given value:

Solve point 1 that is
:
when,







Calculate the sum 


When 


In point 2: 
when,







calculate the sum:

when 


Multiple-3(x+0.6) and 6(x+2.4) you will get -3x-1.8=6x+14.4 then you add -3x + 6x you will get -9x=14.4+1.8 you add 14.4+1.8 that will give you 16.2 then divide that by -9
The answer is:
a: 1 = 2(x^2<span> + 2</span>x<span>)
b:</span>1 = 2x^2 + 4<span>x
d:</span>3 = 2(x + 1)^2
you can tell these are your answer when you solve it.
Hope this helps!