Jika M = 2p²- 4p dan N = p + 3 p² nilai dari 2M – 3N adalah

2M = 2 x (2p² – 4p)
2M = 4p²-8p

3N = 3 x (p + 3p²)
3N = 3p + 9p²

2M – 3N
= 4p² – 8p – (3p + 9p²)
= 4p² – 8p – 3p – 9p²
= -5p² – 11p

Arigatou~~