Помогите пожалуйста!!!
54
C²-25=(c-5)(c+5) 16-x²=(4-x)(4+x) 144-m²=(12-m)(12+m) n-225=(√n-15)(√n+15) 1.69-b²=(1.3-b)(1.3+b) y²-1\4=(y-1\2)(y+1\2) 25x²-1=(5x-1)(5x+1) 25\36 - y² = (5\6-y)(5\6+y)