Respuesta :

Answer:

6

Step-by-step explanation:

substitute the given values into the expression

4[tex]a^{4}[/tex] - 2b² + 40

= 4[tex](2)^{4}[/tex] - 2(7)² + 40

= 4(16) - 2(49) + 40

= 64 - 98 + 40

= - 34 + 40

= 6