Question

1:(1 1/4a + 1 1/5b)²
2: (-3p²- n3)(3p²- n3)
3: (3x + 4)² - (3x - 2)(3x + 2)
4: (x - 3y)²(3x + 3y)²

Answer 1

Ответ:

1) =25/16a²+2×25/16a×36/25b+36/25b²

2)=9n²-9p⁴

3)=24x+20

4)=9x⁴+36x²y²+81y⁴-36x³y-54x²y²+108xy³