Question

what is the answer to this?

Answer 1

Answer:

$= - 2 \times 3 {}^{2} + 3 - 5 \\ = - 2 \times 9 - 2 \\ = - 18 - 2 \\ = - 20$

Right answer.............

Answer 2

Answer:

$f(x) = - 2 {x}^{2} + x - 5 \\ f(3) = - 2( {3)}^{2} + 3 - 5 = - 18 + 3 - 5 = - 20$

-20 is the right answer.