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If f (x) = x + 7, g(x) = 2x - 5, and h(x) = 2x + 4, then what is f(x) + h(x)*g(x) - 12?
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`f(x) = x+7`
`g(x) = 2x-5`
`h(x) = 2x+4`
What you have asked is just the simple arithmetic involved with functions.
`f(x) + h(x) xx g(x) - 12`
`= (x+7)+(2x+4)xx(2x-5) - 12`
`=x+7 + (4x^2-10x+8x-20)-12`
`= x+7 + 4x^2-2x-20-12`
`= 4x^2-x -25`
`f(x) + h(x) xx g(x) - 12 = 4x^2-x -25`
Posted by thilina-g on June 4, 2012 at 5:58 PM (Answer #1)
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