Question

(2)cube -(4)cube+(4) square



and the answer is -40. I want to know the method ​

Answer 1

Step-by-step explanation:

First of all we must know how to find squares and cubes of numbers.

$\rightarrow{ \bold \color{purple}{question : }} \: \: \bold{(2 {)}^{3} - (4 {)}^{3} + (4 {)}^{2} }$

$\bold{solution : }$

Finding the cubes and square.

$\bold{ = 8 - 64 + 16}$

$\bold{ = 8 - 48}$

$\bold{ = - 40}$

Hence, proved..