Question

the length of two sides of a triangle are, side 1 , 8x^2-5x-2, side 2 ,7x-x^2+3
the perimeter of the triangle is 4x^3-3x^2+2x-6
what is the length of the third side of the triangle?

Answer 1

@wio please help

Answer 2

first side + second side + third side = perimeter
So, third side = perimeter - first side - second side
Does this help ?

Answer 3

Let the third side be \(y\).\[
\color{red}{8x^2-5x-2}+ \color{blue}{7x-x^2+3}+y = \color{green}{4x^3-3x^2+2x-6}
\]Now we can try to solve for \(y\).

Answer 4

i think im coming along lol