Prove the following — task. Mathematics State Board, Class 10.

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Answer variants:

$12 - 9 x$

$3 - 12 x$

$12 - 36 x$

$f(x) = 3x + 3$ ,

$g(x) = 3 - 3x$ ,

$h(x) = 4x$ , then prove that

$f \circ \left(g \circ h\right)$

$=$

$\left(f \circ g\right) \circ h$ .

Answer:

$f \circ g$

$=$

$g \circ h$

$=$

$f \circ \left(g \circ h\right)$

$=$

$\left(f \circ g\right) \circ h$

$=$

Did you find an error?

9. Prove the following