Question

(2x + 3y) (px + qx) = rxkuadrat + 23xy + 12ykuadrat
tentukan nilai q, p dan r.
tolong y kk2. klu bisa dikertas. besok dikumpul.

Answer 1

(2x+3y)(px+qy)
= (2p)x^2 + (3p+2q)xy + (3q)y^2

2p = r
23 = 3p+2q
3q = 12
q = 12/3 = 4

23 = 3p+2q
23 = 3p+2(4)
23 = 3p+8
15 = 3p
p = 15/3 = 5

r = 2p
= 2(5) = 10