Question

13. What must be subtracted from a² +b²+c²-3abc to get 2a²-b²-3c²+abc ?

Answer 1

Answer:

LET THE POLYNOMIAL BE "X"

or,(a²+b²+c²-3abc)-x=(2a²-b²-3c²+abc)

or,(a²+b²+c²-3abc)-(2a²-b²-3c²+abc)=x

or,a²+b²+c²-3abc-2a²+b²+3c²-abc=x

or,x=-a²+2b²+4c²-4abc

Step-by-step explanation:

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Answer 2

Answer:

sorry I am on 6th class so I don't understand the question in my book Ratio and proportion is there but not like this question