16a^2+8ab+b^2+16a^2-8ab+b^2 / 16a^2+b^2=32a^2+2b^2 / 16a^2+b^2=2*(16a^2+b^2) / 16a^2+b^2=2. ^ -это степень.
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16a^2+8ab+b^2+16a^2-8ab+b^2 / 16a^2+b^2=32a^2+2b^2 / 16a^2+b^2=2*(16a^2+b^2) / 16a^2+b^2=2. ^ -это степень.