Question

${2}^{3} + {2}^{2} + {2}^{ -3 } + {2}^{ - 2}$


hi please help me​

Answer 1

Answer:

2*2*2,2*2,2*2*2,2*2

8+4+(-8)+(-4)

(+) * (-) =0

therefore the ans Is 0 we cut both 8,-8 4,-4

Hope it helps u

thank you!

Answer 2

$\bf\large{Solution :}$

$\sf{ {2}^{3} + {2}^{2} + {2}^{ -3 } + {2}^{ - 2} }$

$\sf{ 2×2×2 + 2×2 + 1/2×2×2 + 1/2×2 }$

$\sf{ 8+4+1/8+1/4 }$

$\sf{ 64+32+1+2/8 }$

$\sf{= 99/8 }$

$\sf{= 12.375 }$