Question

Calcula el valor numérico de 2x 2– 3x + 1 para:
a) x = 3
b) x = –4

Answer 1

Explicación paso a paso:

$2 {x}^{2} - 3x + 1 = f(x) \\ 2( {3}^{2} ) - 3(3) + 1 = f(3) \\ 2(9) - 9+ 1 = f(3) \\ 18 - 8 = f(3) \\ 10 = f(3 ) \\ f( - 4) = 2( { - 4)}^{2} - 3( - 4) + 1 \\ f( - 4) = 2(16) + 12 + 1 \\ f( - 4) = 32 + 13 = 45$