Question

What is f(-2) for f(x)=x3+4x2+5x+2

Answer 1

Given:-

• 
  `\tt \: f ( - 2 )`

`\:`

• 
  `\tt \: f ( x ) = x³ + 4x² + 5x + 2 \: - - - eqn`

`\:`

Solution:-

• 
  `\tt \: f ( x ) = x³ + 4x² + 5x + 2`

`\:`

put the value of x = -2 in equation~

• 
  `\tt \: f ( -2 ) = ( -2)³ + 4(-2)² + 5( -2 ) + 2`

`\:`

• 
  `\tt \: f ( -2 ) = - 8 + 4(4) - 10 + 2`

`\:`

• 
  `\tt \: f ( -2 ) = - 8 + 16 - 10 + 2`

`\:`

• 
  `\tt{f ( -2 ) =8 - 10 + 2}`

`\:`

• 
  `\tt{f ( -2 ) = - 2 + 2}`

`\:`

• 
  `\underline{ \boxed{ \tt{ \green{ f ( -2 ) = \: 0 \: }}}}`

`\:`

━━━━━━━━━━━━━━━━━━━━━━━

hope it helps! :)