Answer:
4a³+5b^4
4*(7)³+5*(2)^4
4*343+5*16
1372+80
1452
Step-by-step explanation:
a = 7 & b = 2
4a³ + 5b⁴ = 4*(7)³ + 5*2⁴
= 4 * 7* 7 * 7 + 5* 2 * 2 *2* 2
= 1372 + 80
= 1452
