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b)
6x² + 17x + 5 = 0
6x² + 15x + 2x + 5 = 0
2x(3x + 1) + 5 (3x + 1) = 0
(3x + 1)(2x + 5) = 0
So, x = or x =
a)
Let x = -1
-1 - 3 + 9 - 5 = 0
now, if x = -1, x+1 = 0
Divide the equation by x+1, (Look at the attachment)
The quotient is x² - 4x - 5 and the remainder is 0
x² - 4x - 5 = 0
x² - 5x + x - 5
(x - 5)(x + 1) = 0
x = 5, x = -1
So, x = 5, -1, -1
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