Câu hỏi của Phương Anh Nguyễn

Question

a) 3^6.3^7=

b) x^10:x^6:x

c) a^5.a^9

d) 2^3.8^5.16^4

e) 25^3.5^5.3125

f) a^10.a^4:a^12

Minh Hiếu · Accepted Answer

a) $3^6.3^7$ $=3^{13}$

b) $x^{10}:x^6:x$

$=x^{10}:x^7$$=x^3$

c) $a^5.a^9=a^{14}$

Câu trả lời:

a) $3^6.3^7$ $=3^{13}$

b) $x^{10}:x^6:x$

$=x^{10}:x^7$$=x^3$

c) $a^5.a^9=a^{14}$

Nguyễn Hoàng Minh · Answer

$a,=3^{6+7}=3^{13}\ b,=x^{10-6-1}=x^3\ c,=a^{5+9}=a^{14}\ d,=2^3\cdot2^{15}\cdot2^{16}=2^{34}\ e,=5^6\cdot5^5\cdot5^5=5^{16}\ f,=a^{10+4-12}=a^2$

Câu trả lời:

$a,=3^{6+7}=3^{13}\ b,=x^{10-6-1}=x^3\ c,=a^{5+9}=a^{14}\ d,=2^3\cdot2^{15}\cdot2^{16}=2^{34}\ e,=5^6\cdot5^5\cdot5^5=5^{16}\ f,=a^{10+4-12}=a^2$

Minh Hiếu · Answer

d) $2^3.8^5.16^4$

$=2^3.\left(2^3\right)^5.\left(2^4\right)^4$

$=2^3.2^{15}.2^{16}$

$=2^{34}$

e) $25^3.5^5.3125$

$=\left(5^2\right)^3.5^5.5^5$

$=5^6.5^5.5^5$

$=5^{16}$

f) $a^{10}.a^4:a^{12}$

$=a^{14}:a^{12}$

$=a^2$

Câu trả lời:

d) $2^3.8^5.16^4$

$=2^3.\left(2^3\right)^5.\left(2^4\right)^4$

$=2^3.2^{15}.2^{16}$

$=2^{34}$

e) $25^3.5^5.3125$

$=\left(5^2\right)^3.5^5.5^5$

$=5^6.5^5.5^5$

$=5^{16}$

f) $a^{10}.a^4:a^{12}$

$=a^{14}:a^{12}$

$=a^2$