Question

2².3+raiz quadrada49 ÷(4²÷16)-(23+5²)-1?;-;

Answer 1

Resposta:

${2}^{2} + \sqrt{49} \div ( {4}^{2} \div 16) - (23 + {5}^{2} ) - 1 \\ = 4 \times 3 + 7 \div (16 \div 16) - (23 + 25) - 1 \\ = 12 + 7 \div 1 - ( - 2) - 1 \\ = 12 + 7 + 2 - 1 \\ = 20$