Question 3(ii)
Add the following:
(ii) a- b+ab, b - c +bc, c - a + ac

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Solution

a- b +ab, b - c +bc, c - a +ac
Sum = a-b-ab+b-c+bc-a+c+ac (adding like terms)
Hence, the sum is ab + bc + ac.

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Question 10

In $Δ A B C$ ,

a) AB + BC > AC
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a \times (b + c) =

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