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Given: f(x) = -x2 – 3x + 2 and g(x) = x2 + 4 10. Find -3f(x) 11. Find - g(x) - 5 12. Find (f + g)(x) 13. Find f(x) - g(x) 14. Find f (4x) 15. Find g(-x) - 5

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Problem

Solution

10) -3 f(x)


-3(-x^2-3x+2)=3x^2+9x-6

11) -g(x)-5


-x^2-4-5=-x^2-9

12) (f+g)(x)


-x^2-3x+2+x^2+4=-3x+6

13) f(x) -g(x)


-x^2-3x+2-x^2-4=-2x^2-3x-2

14) f(4x)


f(4x)=-(4x)^2-3(4x)+2=-16x^2-12x+2

15) g(-x) -5


(-x)^2+4-5=x^2+4-5=x^2-1

Given: f(x) = -x2 – 3x + 2 and g(x) = x2 + 4 10. Find -3f(x) 11. Find - g(x) - 5 12. Find-example-1
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