simplifying and factoring a fraction how i get ( a + b

infogus88

infogus88

Answered question

2022-05-21

simplifying and factoring a fraction
how i get ( a + b ) 2 + ( a + c ) 2 + ( b + c ) 2 2 from a 4 ( a b ) ( a c ) + b 4 ( b a ) ( b c ) + c 4 ( c a ) ( c b ) assuming that a b c a
i tried to make
a 4 ( a b ) ( a c ) + b 4 ( b a ) ( b c ) + c 4 ( c a ) ( c b ) = a 4 ( a b ) ( a c ) b 4 ( a b ) ( b c ) + c 4 ( a c ) ( b c ) = a 4 ( b c ) ( a b ) ( a c ) ( b c ) b 4 ( a c ) ( a b ) ( a c ) ( b c ) + c 4 ( a b ) ( a b ) ( a c ) ( b c ) = a 4 ( b c ) b 4 ( a c ) + c 4 ( a b ) ( a b ) ( a c ) ( b c ) = a 4 b a 4 c a b 4 + b 4 c + a c 4 b c 4 ( a b ) ( a c ) ( b c ) = a b ( a 3 b 3 ) + a c ( c 3 a 3 ) + b c ( b 3 c 3 ) ( a b ) ( a c ) ( b c ) = ( a b ) ( a c ) ( b c ) ( a 2 + a b + a c + b 2 + b c + c 2 ) ( a b ) ( a c ) ( b c ) = a 2 + a b + a c + b 2 + b c + c 2 = 2 a 2 + 2 a b + 2 a c + 2 b 2 + 2 b c + 2 c 2 2 = a 2 + 2 a b + b 2 + a 2 + 2 a c + c 2 + b 2 + 2 b c + c 2 2 = ( a + b ) 2 + ( a + c ) 2 + ( b + c ) 2 2

Answer & Explanation

Harley Fitzpatrick

Harley Fitzpatrick

Beginner2022-05-22Added 13 answers

Hint: To make the factor ( a b ) ( b c ) ( c a ) appear, write
b 3 c 3 = b 3 a 3 + a 3 c 3 .
Aiden Barry

Aiden Barry

Beginner2022-05-23Added 1 answers

Hint: Multiply a 2 + a b + a c + b 2 + b c + c 2 by ( a b ) ( b c ) ( c a ) ( a b ) ( b c ) ( c a )

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