Question

qual o valor da expressão
${3}^{2} + {5}^{3} - {7}^{0} + {2}^{1}$
me ajudem​

Answer 1

Resposta:

135

9+125-1+2

Answer 2

$3^2+5^3\left(-7\right)^0+2^1\\\\3^2=9\\\\=9+5^3\left(-7\right)^0+2^1\\\\5^3=125\\\\=9+125\left(-7\right)^0+2^1\\\\\left(-7\right)^0=7^0=1\\\\=9+125\cdot \:1+2^1\\\\\\2^1=2\\\\=9+125\cdot \:1+2\\\\125\cdot \:1=125\\\\=9+125+2\\\\9+125=134\\=134+2\\\\134+2=136\\\\=136$