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# If b = a + c and b = 3, then ab + bc =

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Math Expert
Joined: 02 Sep 2009
Posts: 54372
If b = a + c and b = 3, then ab + bc =  [#permalink]

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10 Apr 2019, 21:45
00:00

Difficulty:

25% (medium)

Question Stats:

100% (00:37) correct 0% (00:00) wrong based on 10 sessions

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If b = a + c and b = 3, then ab + bc =

(A) $$\sqrt{3}$$
(B) 3
(C) $$3 \sqrt{3}$$
(D) 9
(E) 27

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Re: If b = a + c and b = 3, then ab + bc =  [#permalink]

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11 Apr 2019, 00:46
Bunuel wrote:
If b = a + c and b = 3, then ab + bc =

(A) $$\sqrt{3}$$
(B) 3
(C) $$3 \sqrt{3}$$
(D) 9
(E) 27

b=a+c
b=3
so ab+bc ; b(a+c) ; b^2 ; 9
IMO D
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Re: If b = a + c and b = 3, then ab + bc =   [#permalink] 11 Apr 2019, 00:46
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