Упростить 2c(c-4)2-c2(2c-10)

Question

Упростить 2c(c-4)2-c2(2c-10)

Answer 1

(2c²-4c)2-4c+20c= 0
4c²-8c-4c+20c= 0
4c²+8c= 0
4c²= -8c
c²= -2c
c= -√2c

Answer 2

2с(с^2–8с+16)–2с^3+10с^2=2с^3–16с^2+32с–2с^3+10с^2=26с^2+32с