Question

c²k + ck - 7 when c = - 3 and k = 2

Answer 1

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Answer 2

$= c²k + ck - 7$

$when \: \: c = - 3 \: \: and \: k = 2$

$= ( - 3)²(2) + ( - 3)(2) - 7$

$= 9 \times 2 + ( - 6) - 7$

$= 18 - 6 - 7$

$= 18 - 13$

$= 5$