answer this question plz
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Hope it helps u...
Step-by-step explanation:
(f) (a+b+c) square= a squ +b squ +c squ+2(ab+bc+ca)
9 squ= a squ+b squ+c squ+2(26)
81-52=a squ+b squ+c squ
a squ+b squ+c squ=29
Here squ means square...!!!
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