Question

${2}^{40} + {2}^{40 } + {2}^{40} + {2}^{40} =$

Answer 1

2^40+2^40+2^40+2^40

=4398046511104

that's all

Answer 2

$2^{40} + 2^{40} + 2^{40} + 2^{40}$

.

Take out common factors 2⁴⁰:

= $2^{40} (1 + 1 + 1 + 1)$

.

Add the numbers in the bracket:

$2^{40} (4)$

.

Rewrite 4 as 2²:

$2^{40} (2^2)$

.

apply (aⁿ)(aˣ) = aⁿ⁺ˣ :

$2^{42}$