Question

calcule o valor das seguintes expressões​

Answer 1

✔OLÁ!!!

$a) \frac{( - 3) {}^{2} - ( - 1) {}^{4} \times ( - 12) {}^{0} + ( - 5) {}^{2} }{( - 3) - ( - 2) { }^{2} + 4 }$

$\frac{9 - 1 \times 1 + 25}{ - 3 - 4 + 4}$

$\frac{9 - 1 + 25}{ - 3 - 4 + 4 }$

$\frac{33}{ - 3} = - 11$

$b)( \frac{3}{2} ) {}^{2} - ( \frac{1}{3} ) {}^{3} + ( \frac{1}{7} ) {}^{2} \times ( \frac{2}{7} ) {}^{ - 2}$

$\frac{9}{4} - \frac{1}{8} + ( \frac{1}{7} ) {}^{2} \times ( \frac{7}{2} )$

$\frac{9}{4} - \frac{1}{8} + ( \frac{1}{7} \times \frac{7}{2} ) {}^{2}$

$\frac{9}{4} - \frac{1}{8} + ( \frac{1}{2} ) {}^{2}$

$\frac{9}{4} - \frac{1}{8} + \frac{1}{4}$

$\frac{19}{4}$

$\frac{c) {2 }^{2} - ( - 2) {}^{3} \times ( - 7) {}^{0} + ( - 3) {}^{3}}{10 - ( - 3) {}^{3} - 7 }$

$\frac{4 - ( - 8) \times 1 - 27}{10 - 9 - 7}$

$\frac{4 + 8 - 27}{ - 6}$

$\frac{ - 15}{ - 6}$

$\frac{5}{2}$

$d)( \frac{7}{5} ) {}^{2} \times ( \frac{7}{5} ) {}^{3} \times ( \frac{1}{7} ) {}^{0} \div ( \frac{7}{5} ) {}^{5}$

$\frac{49}{25} \times \frac{343}{125} \times 1 \div \frac{16807}{3125}$

$\frac{49}{25} \times \frac{343}{125} \times \frac{3125}{16807}$

$\frac{343}{125} \times \frac{125}{343}$

$1$

$e) \frac{(0,2) {}^{2} - ( - 0,1) {}^{0} \times ( - 1,2) + ( - 2) {}^{2} }{( - 3) {}^{0} - ( - 2) {}^{2} + 5 }$

$\frac{ (\frac{1}{2} ) {}^{2} - 1 \times (1,2) + 4}{1 - 4 + 5}$

$\frac{ (\frac{1}{25}) + 1 ,2 + 4 }{2}$

$\frac{ \frac{1}{25} + \frac{6}{5} + 4}{2}$

$\frac{ \frac{135}{25} }{2}$

$\frac{131}{50}$