(ix) Multiply (x - 3) (2x - 7x³+ 4)
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2x² - 7x⁴ +4x - 6x + 21x³ - 12
-7x⁴ + 21x³ + 2x² - 2x - 12
7x⁴ - 21x³ - 2x² + 2x + 12
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x(2x-7x^3+4) -3( 2x-7x^3+4)
2x^2 - 7x^4 + 4x -6x + 21x^3 - 12
-7x^4 + 21x^3+2x^2 - 2x -21
2x^2 - 7x^4 + 4x -6x + 21x^3 - 12
-7x^4 + 21x^3+2x^2 - 2x -21
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