KBAT - Persamaan Kuadratik
[ ( x – 1 )
+ x/2 ] [ ( x
+ 1) + 2x ] = 35
( 3/2 x – 1 ) ( 3x + 1 ) = 35
9/2 x² + 3/2 x – 3x – 1 = 35
Hapuskan nilai 2
dengan ( × 2 )
[ 9/2 x² - 3/2 x – 36 = 0 ] × 2
9 x² - 3 x – 72 = 0
( x – 3 ) ( 3x + 8 ) = 0
x = 3 x = -8/3
Jadi nilai x ialah x =
3.
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