Answered

B. Evaluate each expression.
1. 2x -5,
2. 4x2 + 5,
3. – 2x2 -x + 1,
for x = 4
for x = -2
for x = -1​

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ANSWER:

1. 2x-5, for x=4

  • 2x-5
  • 2(4)-5
  • 8-5
  • [tex]\boxed{3}[/tex]

2. 4x²+5, for x=-2

  • 4x²+5
  • 4(-2)²+5
  • 4(4)+5
  • 16+5
  • [tex]\boxed{21}[/tex]

3. -2x²-x+1, for x=-1

  • -2x²-x+1
  • -2(-1)²-(-1)+1
  • -2(1)+1+1
  • -2+1+1
  • -1+1
  • [tex]\boxed{0}[/tex]

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