a) 5a²-40a-3(a²-4)=2a²-40a+12
b)1-16b²+ 264
в)64p²-q²-p²+q²=63p²
г)4x²-49y²+14xy-4x²-49y²+14xy=-98y²+28xy
a) 5a²-40a-3(a²-4)=2a²-40a+12
b)1-16b²+ 264
в)64p²-q²-p²+q²=63p²
г)4x²-49y²+14xy-4x²-49y²+14xy=-98y²+28xy