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12b^(2) - 8b = 0

Factor our '4b'

Hence

4b(3b - 2) = 0

4b = 0

Hence b = 0

&

3b - 2 = 0

3b = 2

b = 2/3

So 'b' can take either '0' or '2/3'.

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lenpollock

Lvl 17
1w ago

What else can I help you with?