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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:

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You can start in the area near the orange cursor:

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(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:

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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 ...

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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:

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Further to @DrD's finding that the answer to the first puzzle is: The answer to the second is that C equals:

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Since the OP does not call for "no partial answers", here is answer to the top because

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