Question

8) Encontre os valores das expressões:
a) 7²- 40 +18:3² - 10°
b) (6²-5²) x 3³ - 10²
c) 6²: (2³+1) x (3²-5)
d) (7 X 3²-1): (8²- 2 x 31)





pfvvvv para essa semana.​

Answer 1

Resposta:

$a)7^{2} -40+18\div3^{2} -10^{0} \\49-40+2-1\\9+2-1\\11-1\\10$

$b)(6^{2} -5^{2} )\times3^{3} -10^{2} \\(36-25)\times27-100\\11\times27-100\\297-100\\197$

$c)6^{2} \div(2^{3} +1)\times(3^{2} -5)\\6^{2} \div(8+1)\times(9-5)\\36\div9\times 4\\4\times 4\\16$

$d)(7\times 3^{2} -1)\div(8^{2} -2\times31)\\(7\times9-1)\div(64-62)\\(63-1)\div2\\62\div2\\31$