Question

Dada a função f(x) = x²-4x+3, determine f(3/4)
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Answer 1

☑️ substituindo x por 3/4

• $\small{f(\dfrac{3}{4})=(\dfrac{3}{4})^{2}-4.(\dfrac{3}{4})+3}$

• $\small{\dfrac{9}{16}-\dfrac{12}{4}+3}$

• $\small{\dfrac{9}{16}-3+3}$

• $\small{\dfrac{9}{16}+0}$

• $\small{\dfrac{9}{16}}$

☑️ Logo f(3/4) será igual a 9/16