Question

three sides of a triangle are 2xsquare+3x+1,xsquare+7,and3xsquare-2x+3. what is its perimeter​

Answer 1

perimeter of triangle = side + side + side

$2 {x}^{2} + 3x + 1 + {x}^{2} + 7 + 3 {x}^{2} - 2x + 3 \\ = 6 {x}^{2} +x + 11$