А)64a^3-c^3=(4a-c)(16a²+4ac+c²)
б)9p^2+48p+64=(3p+8)²
(5a-10)^2-(3a-8)^2+132a =25a²-100a+100-(9a²-48a+64)+132a=25a²+32a+100-9a²+48a-64=16a²+80a+36=4(4a²+40a+9)
a=-6
4(4*36-240+9)=4(144-240+9)=-87*4=-348
а)(a-c)(a+c)-(a-2c)^2=(a²-c²)-(a²-4ac+4c²)=
a²-c²-a²+4ac-4c²=-5c²+4ac
б)(x-5)(x+1)(x-1)=(x-5)(x²-1)=x³-x-5x²+5