Question

How to find out the zeros of the polynomial 4u2+8u?

Answer 1

Hey

$f(u) = 4u {}^{2} + 8u = 4u(u + 2) \\ \\ Now,\\ f(u) = 0 \\ \\ = > 4u(u + 2) = 0 \\ \\ = > 4u = 0 \: \: or \: \: u + 2 = 0 \\ \\ = > u = 0 \: or \: - 2$

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