Упростите выражения 4a*(a-2)-(a-4)^2= 2*(m+1)^2-4m=

Question

Упростите выражения
4a*(a-2)-(a-4)^2=
2*(m+1)^2-4m=

Answer 1

4a*(a-2)-(a-4)^2=2*(m+1)^2-4m
4a^2-8a-a^2+8a-16=2m^2+4m+2-4m
3a^2-16=2m^2+2
3a^2-2m^2-18=0

Comments

4a*(a-2)-(a-4)^2=

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Там два выражения

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2*(m+1)^2-4m=

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4a*(a-2)-(a-4)^2 = 3a^2-16

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2*(m+1)^2-4m = 2m^2+2 = 2(m^2+1)