Question

plz help me its urgent ,and those who don't know plz don't say​

Answer 1

Answer:

l(YZ) = 2√7unit

Step-by-step explanation:

Given that, X - Y - Z ,

↪ XZ = XY + YZ

According to question,

↪l(XZ) = l(XY) + l(YZ)

[ Putting values ]

↪3√7 = √7 + l(YZ)

↪l(YZ) = 3√7 - √7

↪l(YZ) = 3√7 - 1√7

↪l(YZ) = (3-1)√7

↪l(YZ) = 2√7

Hence,

• The value of l(YZ) is 2√7unit.

✴ Verification ✴

↪l(XZ) = l(XY) + l(YZ)

[ Putting values ]

↪3√7 = √7 + 2√7

↪3√7 = 1√7 + 2√7

↪3√7 = (1+2)√7

↪3√7 = 3√7

Hence Verified!!