Question

perimeter of triangle is 8ysquare - 9y + 4 and it two sides are 3 y square - 5y and 4 y square + 12 find the third side​

Answer 1

Answer:

y² - 4y - 8

Step-by-step explanation:

Let the length of the third side be 's'

Perimeter of the triangle is the sum of the length of its three side.

So, Perimeter = 3y² - 5y + 4y² +12 + s

  8y² - 9y + 4  = 7y² - 5y + 12 + s

   8y² - 7y² - 9y + 5y + 4 - 12 = s

   s = y² - 4y - 8

∴ Let the length of the third side is y² - 4y - 8

Answer 2

Answer:

here is it hope it's helpful to u