Question

№792
а в д ж
№795
а в

Answer 1

4m-4-4m²-4m-1=-4m²-5
2k-10k²-4+12k-9k²=-19k²+14k-4
6p-p²+36-6p+p²+4p+4=4p+36=p+9
x²-9-x²-10x-25= -10x-34=-5x-17

49-14x+x²-x²+64-43=0
   -14x=-70
        x=5

36x²+12x+1-36x²+12x-1=0
24x=0
  x=0