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math

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let g(x)=2x and h(x)=x^2+4 when (h*g)(-2)

  • math - ,

    (h*g)(x) = h(x)*g(x)
    So, just plug in x = -2:
    ((-2)^2+4)*(2(-2)) = (8)*(-4) = -32

    or, more generally,

    (h*g)(x) = (x^2+4)(2x) = 2x^3 + 8x
    so (h*G)(-2) = 2(-8)+8(-2) = -32

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