a ( b - c ) - b ( c -a ) - c ( a -c )
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Answer:
a(b-c) -b(c-a) -c(a-c)
Step-by-step explanation:
ab -ac -bc +ab-ac +c²
2ab -2ac -bc +c²
2a(b-c) - c(b-c)
(2a-c) (b-c)
1) 2a-c =0
2a=c
a=c/2
2) b-c=0
b=c
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