AA

Question 1

​2^5	imes2^7​=​2^{12}​

Accepted Answer

o

Question 2

​3^4	imes9^2=3^7​

Accepted Answer

x

Question 3

​\left(-5\right)^{10}\left(-5\right)=\left(-5\right)^{11}​

Accepted Answer

o

Question 4

​\left(x^4\right)^{12}\left(x^4\right)^2=\left(x^4\right)^{14}​

Accepted Answer

o

Question 5

​\left(2a+b\right)^8\div\left(2a+b\right)^{-8}=1​

Accepted Answer

x

Question 6

​\left(4xy\right)^2=4x^2y^2​

Accepted Answer

x

Question 7

​\left(9x^5\right)\div\left(3x^5\right)=3x​

Accepted Answer

x

Question 8

​2x^2-x^2+4x-x+6-4=x^2+2x+2​

Accepted Answer

o

Question 9

​\left(3c+7b\right)-\left(3c+7b\right)=0​

Accepted Answer

o

Question 10

​2xy-6xy+8x^2-4x^2y=4xy+4x^2​

Accepted Answer

x

Question 11

​\left(3x^2-2x+5\right)-\left(5x^2-x-6\right)=-2x^2+3x+11​

Accepted Answer

x

Question 12

​\left(5x\right)\left(6x\right)\left(4x\right)=120x​

Accepted Answer

x

Question 13

​\left(3x^2\right)\left(2x^2\right)\left(-x^2\right)=-6x^6​

Accepted Answer

o

Question 14

​4\left(x-1\right)=4x-4​

Accepted Answer

o

Question 15

​\left(x-2\right)^2=x^2-4x+4​

Accepted Answer

o

Question 16

​\left(x+1\right)\left(x+1\right)=x^2+x+1​

Accepted Answer

x

Question 17

​\left(4x^2+2x^3-x\right)\div x=4x+2x^2-1​

Accepted Answer

x

Question 18

​\left(xy^2+4xy^2+16xy\right)\div xy=y^2+4y+16​

Accepted Answer

o

Question 19

รากที่สองของ0.2025=045

Accepted Answer

x

Question 20

​\sqrt{729}=9\sqrt9​

Accepted Answer

x

# 1

OX

$2^5\times2^7$ = $2^{12}$

# 2

OX

$3^4\times9^2=3^7$

# 3

OX

$\left(-5\right)^{10}\left(-5\right)=\left(-5\right)^{11}$

# 4

OX

$\left(x^4\right)^{12}\left(x^4\right)^2=\left(x^4\right)^{14}$

# 1

OX

25×272^5\times2^725×27=2122^{12}212

# 2

OX

34×92=373^4\times9^2=3^734×92=37

# 3

OX

(−5)10(−5)=(−5)11\left(-5\right)^{10}\left(-5\right)=\left(-5\right)^{11}(−5)10(−5)=(−5)11

# 4

OX

(x4)12(x4)2=(x4)14\left(x^4\right)^{12}\left(x^4\right)^2=\left(x^4\right)^{14}(x4)12(x4)2=(x4)14

$2^5\times2^7$ = $2^{12}$

$3^4\times9^2=3^7$

$\left(-5\right)^{10}\left(-5\right)=\left(-5\right)^{11}$

$\left(x^4\right)^{12}\left(x^4\right)^2=\left(x^4\right)^{14}$