Multiply 6 k -1 k 2-2 k -4A- 6 k 3-11 k 2-26 k -4- 6 k 3-13 k 2-22 k -4- 6 k 3-11 k 2-26 k -4D- 6 k 3-11 k 2-26 k -4

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Visualisation of (X+A)(X+B)

Multiply 6 k ...

Question

Multiply $(6 k - 1) (k^{2} + 2 k - 4)$

6 k^{3} + 11 k^{2} + 26 k - 4

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6 k^{3} + 11 k^{2} - 26 k + 4

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6 k^{3} - 11 k^{2} + 26 k + 4

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6 k^{3} - 13 k^{2} - 22 k - 4

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Solution

The correct option is B $6 k^{3} + 11 k^{2} - 26 k + 4$
$(6 k - 1) (k^{2} + 2 k - 4)$

$= 6 k^{3} + 12 k^{2} - 24 k - k^{2} - 2 k + 4$

$= 6 k^{3} + 12 k^{2} - k^{2} - 24 k - 2 k + 4$

$= 6 k^{3} + 11 k^{2} - 26 k + 4$

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Multiply (6k−1)(k2+2k−4)

The correct option is B 6k3+11k2−26k+4(6k−1)(k2+2k−4) =6k3+12k2−24k−k2−2k+4 =6k3+12k2−k2−24k−2k+4 =6k3+11k2−26k+4

Multiply $(6 k - 1) (k^{2} + 2 k - 4)$

The correct option is B $6 k^{3} + 11 k^{2} - 26 k + 4$
$(6 k - 1) (k^{2} + 2 k - 4)$

$= 6 k^{3} + 12 k^{2} - 24 k - k^{2} - 2 k + 4$

$= 6 k^{3} + 12 k^{2} - k^{2} - 24 k - 2 k + 4$

$= 6 k^{3} + 11 k^{2} - 26 k + 4$