12x2-72-8x2-722 x-1-152 x-12

Let a = x^2 + 7x and b = 2x 1 = gt; 12(x² + 7x)² 8 (x² +7x )(2x 1) 15 (2x 1)² = 12a^2 8ab 15b^2 = 12a^2 18ab + 10ab 15b^2 = 6a (2a 3b) ...

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Grouped Frequency Table

12x2+72-8x2+7...

Question

12(x²+7)²-8(x²+7)²(2x-1)-15(2x-1)²

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