Question

4. k(x) × g(x) × f(x)​

Answer 1

$k(x) \times f(x)$

$(2x + 5) \times (x - 1)$

$2 x(x - 1) + 5(x - 1)$

$({2 x }^{2} - 2x) + (5x - 5)$

${2x}^{2} - 3x - 5$

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$k(x) \times g(x) \times f(x)$

$g(x) \times (k(x) \times f(x))$

$({6x }^{2} - 4x + {3x}^{4} ) \times ( {2x}^{2} - 3x - 5)$

${6x}^{2} ( {2x}^{2} - 3x - 5) - 4x ( {2x}^{2} - 3x - 5) + {3x}^{4} ( {2x}^{2} - 3x - 5)$

$12 {x}^{4} - 18 {x}^{3} - 30 {x}^{2} - {8x}^{3} - 12 {x}^{2} - 20x + {6x}^{6} - 9x {}^{5} - {15x}^{4}$