393,093 views
20 votes
20 votes
Evaluate-3x^3-4x for x= -1.​

User Ed James
by
2.8k points

2 Answers

15 votes
15 votes

Answer:

  • 7

Step-by-step Solution:

  • -3x³ - 4x
  • => (-3 × x³) - 4x

[Substituting the value of x]

  • => (-3 × -1³) - 4(-1)

[Simplifying]

  • => (-3 × -1) - (-4)

[Adding]

  • => (3) + 4

[Final Answer]

  • => 7

Hoped this helped!

User Eric Burke
by
2.6k points
12 votes
12 votes

Answer:

if evaluated answer = 7

Explanation:

-3x³-4x

-3(-1)³ - 4(-1)

-3(-1) - 4(-1)

+3--4

+3+4

7

User Akis
by
3.2k points