Question

calculate the numerical value for the following algebraic expressions when a = 1 and b= 2
solve with whole process​

Answer 1

Answer:

$\frac{28}{5}$

Step-by-step explanation:

Substitute a = 1, b = 2 into the expression , that is

3(2) + $\frac{-2}{5}$ (1)³ → 1³ = 1

= 6 - $\frac{2}{5}$

= $\frac{30}{5}$ - $\frac{2}{5}$

= $\frac{28}{5}$ ( = 5 $\frac{3}{5}$ = 5.6 )