Question

[đỗ hồng quyên]

tính giá trị các biểu thức sau

a,\(a^3.a^9\)

b,\(\left(a^5\right)^7\)

c,\(\left(a^6\right)^4.a^{12}\)

d,\(4.5^2-2.3^2\)

E\(5^6:5^3+3^3.3^2\)

Answer 1

[Jennie Kim]

\(a,a^3\cdot a^9=a^{12}\)

\(b,\left(a^5\right)^7=a^{35}\)

\(c,\left(a^6\right)^4\cdot a^{12}=a^{24}\cdot a^{12}=a^{36}\)

\(d,4\cdot5^2-2\cdot3^2=2^2\cdot5-2\cdot3^2=2\cdot\left(2\cdot5+3^2\right)=2\cdot19=38\)

\(e,5^6:5^3+3^3\cdot3^2=5^3+3^5\)

Answer 2

[Bảo Chi Lâm]

a,a³.a⁹=a³⁺⁹=a¹²

b,(a⁵)⁷=a^5.7=a³⁵

Mấy câu tiếp theo bn lám tương tự!