Question

Pls answer... It is in the image.

Answer 1

Explanation:

2,

`(a.y^(3) +3y^(2) -3 ) = (ay^(2) +(4a+3)y +4(4a+3))(y-4) +64a+45`

so A = 64a +45

(
`2y^(3) -5y+a =(2y^(2) +8y +27)(y-4) +108 +a`

so B = 108 +a

2A-B=0--> 2(64a+45)-108-a=0--> a =18/127

3,

(3x+2y)^3 = 27x^3 +54x^2.y + 36x.y^2 +8y^3 = 27x^3 +8y^3 +2 +18xy(3x +2y) = 20^3

so P = 27x^3 +8y^3 = 20^3 - 18.xy(3x+2y)= 7440