1) (m-1)^2-121=m^2-2m+1-121=m^2-2m-120=(x-12)(x+10)
2) x^2-144=0
D=0^2-4*1*(-144)=576
x1=24/2=12x2=-24/2=-12
3) 125+n^3=5^3+n^3=(5+n)(25-5n+n^2) 4) (87^3-42^3)/15=(658503-74088)/15=584415/15=38961
1) (m-1)^2-121=m^2-2m+1-121=m^2-2m-120=(x-12)(x+10)
2) x^2-144=0
D=0^2-4*1*(-144)=576
x1=24/2=12
x2=-24/2=-12
3) 125+n^3=5^3+n^3=(5+n)(25-5n+n^2)
4) (87^3-42^3)/15=(658503-74088)/15=584415/15=38961