f(x) = 2x² - 10x + 8
g(x) = x - 4
A].
(f+g)(x) = f(x) + g(x)
= (2x² - 10x + 8) + (x - 4)
= 2x² - 10x + x + 4
= 2x² - 9x + 4
B].
(f/g)(x) = f(x)/g(x)
= 2x² - 10x + 8/x - 4
= 2x² + 2(-5)x + 2(4)/x - 4
= 2(x² - 5x + 4)/x - 4
= 2(x - 1)(x - 4)/x - 4 => (x - 4) dicoret
= 2(x - 1)
= 2x - 2
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f(x) = 2x² - 10x + 8
g(x) = x - 4
A].
(f+g)(x) = f(x) + g(x)
= (2x² - 10x + 8) + (x - 4)
= 2x² - 10x + x + 4
= 2x² - 9x + 4
B].
(f/g)(x) = f(x)/g(x)
= 2x² - 10x + 8/x - 4
= 2x² + 2(-5)x + 2(4)/x - 4
= 2(x² - 5x + 4)/x - 4
= 2(x - 1)(x - 4)/x - 4 => (x - 4) dicoret
= 2(x - 1)
= 2x - 2