Respuesta :

1. Remember

[tex]2^3[/tex]

Means

[tex]2\times2\times2[/tex]

Therefore,

[tex]2^3=2\times2\times2=8[/tex]

2. Remember that we have to solve what's inside the parenthesis first. Therefore,

[tex]45(15+10-23)=45(2)=90[/tex]

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