Question

the perimeter of a triangle is 8-9y+6 and its 2 sides r 4-7y and 4+14 find the third side


pls give step by step explanation

Answer 1

Answer:

Perimeter of the triangle = Sum of three sides

= 8y2 – 9y + 4

Sum of two sides = 3y2 – 5y + 4y2 + 12

= 7y2 – 5y + 12

∴ (8y2 – 9y + 4) – (7y2 – 5y + 12)

= 8y2 – 9y + 4 – 7y2 + 5y – 12

= y2 – 4y – 8

Hence third side = y2 – 4y - 8

Answer 2

Here’s your answer. Hope it helps you.