Question

If x = 4 is a zero of polynomial 3x2 - 2x + a. Then the value of
a is​

Answer 1

Answer:

$given \: \: x = 4 \\ \\ {3x}^{2} - 2x + a = 0\\ 3(4) {}^{2} - 2 \times 4 + a = 0\\ 3 \times 16 - 8 + a = 0\\ 48 - 8 + a = 0 \\ 40 + a = 0 \\ a = - 40$

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