Answer:
Answer (a): Area of garden
![= 4x^2+12x+9](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1c4yzjv0rdripoom20l1ikmnr3tc3e1x22.png)
Answer (b): Area of the square garden and the walkway =
![16x^2+24x+9](https://img.qammunity.org/2020/formulas/mathematics/high-school/5977ctesm750yfeshij5jv7m4od6hrrlw4.png)
Explanation:
Answer (a):
From given picture we see that Length of the garden = 2x+3
Width of the garden = 2x+3
Then area of the square garden = (Length)(Width)
![= (2x+3)(2x+3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/t4w3oq0nwmk4akv12a73mhvcu0bydtwghi.png)
![= 4x^2+6x+6x+9](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6480vcfn26vmllhlqgx3j7f75rt9mfhdo1.png)
![= 4x^2+12x+9](https://img.qammunity.org/2020/formulas/mathematics/middle-school/1c4yzjv0rdripoom20l1ikmnr3tc3e1x22.png)
Answer (b):
From given picture we see that width of the walkway = x
Then length of the garden including walkway =x + (2x+3) +x=4x+3
Similarly width of the garden = 4x+3
Then area of the square garden and the walkway = (Length)(Width)
![= (4x+3)(4x+3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/s7n5tp44flm9lqoj1e5p16jtxktslaet51.png)
![= 16x^2+12x+12x+9](https://img.qammunity.org/2020/formulas/mathematics/middle-school/hdlk06ipqa0erfkajr7p03st9bgj96fs3r.png)
![= 16x^2+24x+9](https://img.qammunity.org/2020/formulas/mathematics/middle-school/d9jr1reslkyiaxbmtkjmx926edaxdpj7xj.png)