Question

$5b { }^{2} + 16b + 3$
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Answer 1

Answer:

$5b ^{2} + 16b + 3 = 0$

$5b^{2} + 15b + b + 3 = 0$

$5b(b + 3) + 1(b + 3) = 0$

$(5b + 1)(b + 3) = 0$

$b = \frac{ - 1}{5} \: or \: - 3$