If a+b+c =10 and an+bc+ca =15 find the value of (a+b)^3(b+c)^3(c+a)^3 -3(a+b)(b+c)(c+a)

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)

Abank manager wants to encourage new customers to open accounts with principals of at least $2,500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?