Find polynomial k(x) such that h(x)+k(x)=3x2+5x+10 using h(x)=x2-3x+8

H(x) + x^2 -3x + 8 = 3x^2 + 5x + 10 ;
h(x) = 3x^2 - x^2 + 5x + 3x + 10 - 8 ;
h(x) = 2x^2 + 8x + 2 ;

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3