Question

a) (-6)² - 12

b) (-5)(+6) - (-3)²

c) (-8)² : (-16) + 5

d) (-6)⁰ + (-3)² + (-2)³(-1)

e) 3² - 4² - (-7)(-6)

f) (-7)² - (-7)(-6)

a) √16 + √9 e √16 + 9

b) √225 − √81 e √225 − 81

c) √121 × √9 e √121 × 9

d) √324 ÷ √81 e √324 ÷ 81

Answer 1

Resposta:

1. a)24

b)-39

c)1

d)16

e)-49

f)7

2. a) 7 e 7

b) 6 e 6

c)33 e 33

d)2 e 2

Answer 2

Resposta:

Olá anjinho,

1-

a)24

b)-39

c)1

d)18

e)49

f)7

2-

a)7 e 13

b)6 e -66

c)+33 e 99

d)2 e 0,2222222...

Explicação passo-a-passo:

1-

a)

${( - 6)}^{2} - 12 =$

$36 - 12 =$

$24$

b)

$( - 5)( + 6) - {( - 3)}^{2} =$

$( - 5)( + 6) - 9 =$

$- 30 - 9 =$

$- 39$

c)

${( - 8)}^{2} \div ( - 16) + 5 =$

$64 \div ( - 16) + 5 =$

$- 4 + 5 =$

$1$

d)

${( - 6)}^{0} + {( - 3)}^{2} + {( - 2)}^{3} \times ( - 1) =$

$1 + 9 - 8 \times ( - 1) =$

$10 - 8 \times ( - 1) =$

$10 + 8 =$

$18$

e)

${3}^{2} - {4}^{2} - ( - 7)( - 6) =$

$9 - 16 + 7 \times - 6 =$

$9 - 16 - 42 =$

$- 7 - 42 =$

$49$

f)

${( - 7)}^{2} - ( - 7)( - 6) =$

$49 - ( - 7)( - 6) =$

$49 + 7 \times - 6 =$

$49 - 42 =$

$7$

2-

a)

$\sqrt{16} + \sqrt{9} =$

$4 + 3 =$

$7$

$\sqrt{16} + 9 =$

$4 + 9 =$

$13$

b)

$\sqrt{225} - \sqrt{81} =$

$15 - 9 =$

$6$

$\sqrt{225} - 81 =$

$15 - 81 =$

$- 66$

c)

$\sqrt{121} \times \sqrt{9} =$

$11 \times 3 =$

$33$

$\sqrt{121} \times 9 =$

11×9=

99

d)√324÷√81=

18÷9=

2

√324÷81=

18÷81=

0,2222222....