a+b+c=6 and a²+b²+c²=26 then ab+bc+ca=?
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ab +bc+ca=5.... plzz mark it as a brainliest answer
Answered by
1
by using the formula (a+b+c)^2
ab+bc+ca=5
ab+bc+ca=5
NeelamG:
now u understand
??
36=26+2(ab+bc+ca)
ok
10=2(ab+bc+ca)
u understand??
how i do it??
ya!
thanks
wlcm
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