Math, asked by mudemurthy, 6 months ago

If a+b+c=9 and a^2+b^2+c^2=21,then ab+bc+ca is equal to

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Answered by Ajaysahoo830

1

Answer:

I don't know

Step-by-step explanation:

thank you for free point

Answered by Anonymous

1

Answer:

ans. ab + bc + ca = 30.

Hope this may help u.....

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