please answer this question asap
Find the value of 10n² + 5n - 2, where n= -4
Answers
Answered by
1
Answer:
138
Step-by-step explanation:
10(-4)²+5(-4)-2
=10(16)+(-20)-2
=160-20-2
=140-2
=138
Answered by
1
Answer:
190
Step-by-step explanation:
10n² + 5n - 2
= 10 X -4 X -4 + 5 X -4 -2 (keeping n as -4)
=10 X 16 + 5 X 6 (while multiplying two negative integers we ignore - and do the operation only in multiplication and division and when two negative integers are put on without the sign of multiplication and division then we add it . )
= 160 + 30
= 190
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