Question

which part of the expression will you evaluate first?
b³
simplify.
3a + 4b³ - 5 = 3(6) + 4(2)³ - 5
= \boxed{}

Explanation:

Step1: Evaluate the exponent

First, calculate \( (2)^3 \). By the definition of exponentiation, \( 2^3 = 2\times2\times2 = 8 \). So the expression becomes \( 3(6)+4(8)-5 \).

Step2: Multiply the terms

Next, calculate \( 3(6) = 18 \) and \( 4(8)=32 \). Now the expression is \( 18 + 32-5 \).

Step3: Add and subtract

First, add \( 18 \) and \( 32 \), we get \( 18 + 32=50 \). Then subtract \( 5 \) from \( 50 \), \( 50 - 5 = 45 \).

Answer:

\( 45 \)