Toán Lớp 8: Cho a + b + c = 0 chứng minh M = N = P
M = a ( a + b )( a + c )
N = b ( b + c )( b – a )
P = c ( c + a )( c + b)
cứu emmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
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Toán Lớp 8: Cho a + b + c = 0 chứng minh M = N = P
M = a ( a + b )( a + c )
N = b ( b + c )( b – a )
P = c ( c + a )( c + b)
cứu emmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Comments ( 2 )
= a(-c)(-b)
=abc
n = b(b + c)(b + a)
= b(-a)(-c)
= abc
p = c(c + a)(c + b)
= c(-b)(-a)
= abc
=> m = n = p