6
In the bottom right corner, in the 6-clue pointing right, you know:
This forces:
The bottom right corner falls to easy deductions:
Next:
Finishing up:
6
You can start in the area near the orange cursor:
5
(Dupe, but with pic)
You have an X-wing of ones at the bottom right, so you can place the 1 in the 12 clue:
4
The answer is
3
Let
$$(4x^4+8x^3+7x^2+3x+\frac{1}{2}) = (i^2-j^2)$$
Then
$$(4x^4+8x^3+7x^2+3x+\frac{1}{2}) = (i+j)(i-j)$$
Assuming i and j are polynomials in x of degree no greater than 2, we could say
$$i = ax^2 + bx + c$$
$$j = dx^2 + ex + f$$
Substituting into $(i+j)(i-j)$ and expanding we can then group like terms and compare with the original equation to get the ...
3
The answer is:
We can work out the values of each icon (GIRL, BOY, HEART) by solving the first 3 equations:
The trick to solving the final equation is the same as for all internet puzzles of this type - you have to notice the additional icons hidden in the image. In this case:
1
1
Further to @DrD's finding that the answer to the first puzzle is:
The answer to the second is that C equals:
1
Since the OP does not call for "no partial answers", here is answer to the top
because
Only top voted, non community-wiki answers of a minimum length are eligible