Question

Sea la función f(x)=2x^2-6, encuentra f(2), f(-2), f(3)

Answer 1

Explicación paso a paso:

$f(2) = 2( {2}^{2} ) - 6 \\ f(2) = 2(4) - 6 \\ f(2) = 8 - 6 \\ f(2) = 2 \\ \\ f( - 2) = 2( { - 2}^{2} ) - 6 \\ f( - 2) = 2(4) - 6 \\ f( - 2) = 8 - 6 \\ f( - 2) = 2 \\ \\ f(3) = 2( {3}^{2} ) - 6 \\ f(3) = 2(9) - 6 \\ f(3) = 18 - 6$

$f(3) = 12$