131,335 views
38 votes
38 votes
Simplify:
7x³ + 5x² -2 = [?]
X=-1

User Xav
by
2.7k points

1 Answer

11 votes
11 votes

Answer: - 4

Explanation:

Since x is already given, which is -1, just substitute the value.

7 * -1 * -1 * -1 + 5 * -1 * -1 - 2

7 * -1 + 5 * 1 - 2

-7 + 5 - 2

-2 - 2 = - 4

User Hamza Siddiqui
by
2.6k points
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