Please help me with my assignment question ​

s = 21 cm

Step-by-step explanation:

Square is s x s = area

So you just take the square root button of the calculator to find that 21 x 21 is 441.

21

Step-by-step explanation:

Area of Square formula: side x side

s^2=441

square root both sides:

s=√441=21

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )