Номер 424;425...........

Question

Номер 424;425
...........

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Answer 1

224
(a-2)(a²+2a+4)=a³-8
(x+2y)(x²-2xy+4y²)=x³+8y³
(4+b)(16-4b+b²)=64+b³
(3a-2b)(9a²+6ab+4b²)=27a³-8b³
 
225
(a+1)(a²-a+1)-a³=a³+1-a³=1
(x+y)(x²-xy+y²)-x(x²+y²)=x³+y³-x³-xy²=y³-xy²
(m-2)(m²+2m+4)+8=m³-8+8=m³
(c+3)(c²-3c+9)-27=c³+27-27=c³

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