What is the answer to this?

Answer:
Solution given;
There are 8*x² , 6 *x and 3 *1.
So
in total it is 8x²+6x+3 which is a required expression.
count all tiles and note
Now multiply and add
[tex]\\ \sf\longmapsto 8(x^2)+9(x)+3(1)[/tex]
[tex]\\ \sf\longmapsto 8x^2+9x+3[/tex]