If L ,B are zeroes of p(x) = 3x² - 2x - 6, find L² + B²
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L+B = -(-2)/3
=2/3
LB=-6/3 =(-2)
(L+B)^2=L^2+B^2+2LB
L^2+B^2= 4/9-(-4)
=4/9+4
=20/9
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