Berapa nilai r nya ?
(2x + 3y) (px + qy) = rx² + 23xy + 12y²
hayooooo berapa ??
(2x + 3y) (px + qy) = rx² + 23xy + 12y²
hayooooo berapa ??
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2px² + 2qxy + 3ypx + 3qy² = rx² + 23xy + 12y²
Dari persamaan 3qy² = 12y² didapat :
3q = 12
q = 4
Masukan ke 8xy + 3ypx = 23xy
( 8 + 3p )xy = 23xy
8 + 3p = 23
3p = 15
p = 5
Masukan lagi :
2px² = rx²
10x² = rx²
r = 10