dcarranza626
12.07.2019 •
Mathematics
Suppose that the functions g and h are defined for all real numbers x as follows.
g(x) = 4x– 4
h(x) = x-5
write the expressions for (g+h)(x) and (g-h)(x) and evaluate (g.h)(1).
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Ответ:
See below in bold.
Step-by-step explanation:
(g + h)(x) = 4x - 4 + x - 5
= 5x - 9.
(g - h)(x) = 4x - 4 - (x - 5) ( Note we put the x - 5 in parentheses)
= 4x - 4 - x + 5
= 3x + 1.
(g.h)(x) = (4x - 4)(x - 5)
so (g.h)(1) = (4(1) - 4)(1 - 5)
= 0 * -4
= 0.
Ответ: