If a and B are real numbers and (5a + 6) square + lb-3l = 0, find the value of a / b

From (5a + 6) square + lb-3l = 0
because
Square numbers, absolute values are greater than or equal to 0,
And the equation is zero,
therefore
5A + 6 = 0 and B-3 = 0
a=-6/5,b=3
a/b=-2/5.

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