Question

5x-4x 2+3 at x=2
Answer

Answer 1

-3

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Answer 2

Step-by-step explanation:

$\\ \qquad\quad\sf \longmapsto 5x-4x^2+3$

$\\ \qquad\quad\sf \longmapsto 5(2)-4(2)^2+3$

$\\ \qquad\quad\sf \longmapsto 10-4(4)+3$

$\\ \qquad\quad\sf \longmapsto 10-16+3$

$\\ \qquad\quad\sf \longmapsto -3$