Question

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Answer 1

Answer:

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Answer 2

Answer:

Step-by-step explanation:

$5x-4x^{2} +3$

$= -4x^{2} +5x+3$

$(i) x=0$

$=-4(0)^{2} +5(0)+3$

$=3$

$(ii) x=-1$

$=-4(-1)^{2} +5(-1)+3$

$=-4-5+3$

$=-9+3$

$=-6$

$(iii)x=2$

$=-4(2)^{2} +5(2)+3$

$=-16+10+3$

$=-16+13$

$=-3$