Question

If one zero of the quadratic polynomial 2xsquare +px +4 is 2 find the other zero. Also find the value of p

Answer 1

Answer:

$q(x) = 2 {x}^{2} + px + 4 \\ q(2) = 2( {2)}^{2} + p(2) + 4 \\ 0 = 4 + 2p + 4 \\ 0 = 2p + 8 \\ - 8 = 2p \\ - 4 = p$

Thus, the value of p is -4.

Hope this helps.

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