а) 9p⁴-6p²q+q² = (3p²-q)²
б) a⁴+2a²b+b² = (a²+b)²
в) -x⁴-2nx²-n² = -(x²+n)²
г) 25x⁴-60x²y²+36y⁴ = (5x²-6y²)²
а) 9p⁴-6p²q+q² = (3p²-q)²
б) a⁴+2a²b+b² = (a²+b)²
в) -x⁴-2nx²-n² = -(x²+n)²
г) 25x⁴-60x²y²+36y⁴ = (5x²-6y²)²