(6m+4)²-!00=(6m+4)-10²=((6m+4)+10)((6m+4)-10)=(6m+4+10)(6m+4-10)=
=(6m+14)(6m-6)
(p+6)²-196=(p+6)²-14²=((p+6)+14)((p+6)-14)=(p+6+14)(p+6-14)=(p+20)(p-8)
(5-b²p³)(5+b²p³)=25+5b²p³-5b²p³-b⁴p⁶=25-b⁴p⁶
(5n+5)²-16=(5n+5)²-4²=((5n+5)+4)((5n+5)-4)=(5n+5+4)(5n+5-4)=(5n+9)(5n+1)
1-(3c+2)²=(1+(3c+2))(1-(3c+2))=(1+3c+2)(1-3c-2)=(3+3c)(-1-3c)=-3(1+c)(1+3c)