Question

Calcule:

a) 8 - 25 + 1 5 b) −8 3 - ( - 4 )² c) 0,81 + 0,0.​

Answer 1

$a)\\8 - \sqrt { 25 } + \sqrt[ 5 ] { 1 }\\8 - 5+ \sqrt[ 5 ] { 1 }\\3+ \sqrt[ 5 ] { 1 }\\3+1\\\boxed{=4}\\\\b)\\\sqrt[ 3 ] { - 8 } - ( - 4 ) ^ { 2 }\\-2-(-4)^2\\-2-16\\\boxed{-18}\\\\c)\\\sqrt { 0,81 } + \sqrt { 0,01 }\\0.9+\sqrt { 0.01 }\\0.9+0.1\\\boxed{=1}$