The value of l-5l -2 l-5l + l-1l is:
a. 4
b. 16
c. -4
d. -16

|−5|−(|2|)(|−5|)+|−1|

=5−(|2|)(|−5|)+|−1|

=5−2(|−5|)+|−1|

=5−(2)(5)+|−1|

=5−10+|−1|

=−5+|−1|

=−5+1

=−4

So, the answer is C, -4.

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step-by-step explanation:

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2