If p = 6x3 - 8x2 + 4x - 2 and Q = 5 - 4x + 6x2 - 8x2 find P+2Q

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

What is the sum of these mixed numbers 4 2/3+ 3 1/9