Question

The lengths of two sides of a triangle are shown.

Side 1: 3x2 − 4x − 1

Side 2: 4x − x2 + 5

The perimeter of the triangle is 5x3 − 2x2 + 3x − 8.

What is the total length of sides 1 and 2 and what is the length of the third side of the triangle

Answer 1

the perimeter of a triangle is the sum of all three sides

so to find the third side, you simply need to subtract

perimeter - side 1 - side 2

can you try setting up and doing the subtraction?

Answer 2

I will guys, thank you so much