a, 2.[(-62 + 24) : 4] + 14
= 2.[(36 + 24) : 4] + 14
= 2.(60 : 4) + 14
= 2. 15 + 14
= 30 + 14
= 44
b, (-3)2 + 5.(-2)3 + 58 : (-2)
=9 + 5.(-8) + 58 : (-2)
= 9 + (-40) + (-29)
= (-31) + (-29)
= -60
c,56 - 6.(|-17| + 9)
= 56 - 6.(17 + 9)
= 56 - 6. 26
= 56 - 156
= -100
a) Ta có: \(2\cdot\left[\left(-6^2+24\right):4\right]+14\)
\(=2\cdot\left[\left(-36+24\right):4\right]+14\)
\(=2\cdot\left[\left(-12\right):4\right]+14\)
\(=2\cdot\left(-3\right)+14\)
=8
b) Ta có: \(\left(-3\right)^2+5\cdot\left(-2\right)^3+58:\left(-2\right)\)
\(=9+5\cdot\left(-8\right)-29\)
\(=-20-40\)
=-60
c) Ta có: \(56-6\cdot\left(\left|-17\right|+9\right)\)
\(=56-6\cdot\left(17+9\right)\)
\(=56-6\cdot26\)
\(=-100\)
Giải:
2.[(-62+24):4]+14 (nếu như -6 k o có ngoặc)
=2.((-36+24):4)+14
=2.((-12):4)+14
=2.(-3)+14
=-6+14
=8
2.[((-6)2+24):4]+14 (nếu như -6 có ngoặc)
=2.[(36+24):4]+14
=2.(60:4)+14
=2.15+14
=30+14
=44
(-3)2+5.(-2)3+58:(-2)
=9+5.(-8)+(-29)
=9+(-40)+(-29)
=-60
56-6.(|-17|+9)
=56-6.(17+9)
=56-6.26
=56-156
=-100
Chúc bạn học tốt!
