tolong dong jawaban soal diatas

Berdasarkan segitiga pascal maka
1. (p-q)³ = p³ - 3p²q + 3pq² - q³
2. (2p+q)³ = 8p³ + 12p²q +  6pq² + q³
3. (X+Y)⁴ = X⁴ + 4X³Y + 6X²Y² + 4 XY³ + Y⁴
4. (x-2y)⁴ = x⁴ - 8 x³y + 24 x²y² - 32 xy³ + 16y⁴