[tex]f( - 4) = - 122[/tex]
And
[tex]g(5) = - 21[/tex]
Step-by-step explanation:
Greetings !
For the first expression
[tex]f(x) = 2x {}^{3} + 6[/tex]
plug in -4 at the variable x and solve the expression.
[tex]f( - 4) = 2( - 4) {}^{3} + 6[/tex]
Follow the PEMDAS order of operations
calculate the exponents
[tex]( - 4) {}^{3} = - 64[/tex]
Apply exponent rule
[tex]( - a) {}^{n} = - a {}^{n} . \: if \: n \: is \: odd[/tex]
Thus,
[tex]( - 4) {}^{3} = - 4 {}^{3} = - 64[/tex]
Multiply and divide (left to right )
[tex]2( - 64) = - 128[/tex]
[tex] = - 128 + 6 \\ = - 122[/tex]
Fairly follow the same. process for the second function
Hope it helps !!
