Question

F(x) = 2x^4-8x²+5x-7
x=3

Answer 1

`{ \pink{ \boxed{ \purple{ \sf{f(3) = 98}}}}}`

Explanation:

`{ \blue{ \tt{f(x) = 2 {x}^(4) - 8 {x}^(2) + 5x - 7}}}`

`{ \blue{ \tt{f(3) = 2( {3})^(4) - 8( {3})^(2) + 5(3) - 7}}}`

`{ \blue{ \tt{f(3) = 2(81) - 8(9) + 15 - 7}}}`

`{ \blue{ \tt{f(3) = 162 - 72 + 8}}}`

`{ \blue{ \tt{f(3) = 162 - 64}}}`

`{ \red{ \boxed{ \green{ \sf{f(3) = 98}}}}}`