A wide horizontal Facebook cover background, 16:9 aspect ratio, no people. Modern 3D render of a mathematics and exam preparation concept in calm blue and deep indigo tones. Floating translucent glass panels and neon light paths displaying real high school math formulas clearly: abbreviated multiplication "(a+b)²=a²+2ab+b²" and "a²-b²=(a-b)(a+b)", power rules "aⁿ·aᵐ=aⁿ⁺ᵐ", logarithm "log_a(b)", and integral symbol "∫f(x)dx". Elegant translucent 3D geometric shapes float nearby: a pyramid, a cylinder, and a cone, showing their surface area formulas like "S=πr(r+l)" and "V=πr²h". Soft studio lighting, clean, minimalist, professional educational design, with plenty of empty space on the left side for advertisement text
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