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q = 4y² + 3y
Penyelesaian :
3( 3y² + 5y ) - 2( 4y² + 3y )
9y² + 15y - 8y² - 6y
9y² - 8y² + 15y - 6y
= y² + 9y
3p - 2q = (9y² + 15y) - (8y² + 6y)
3p - 2q = y² + 9y