Calculate 25111

The quadratic function has the formula y = -2x²-3x + 8. Calculate the function value in points 5, -2, and ½.

Correct answer:

y1 =  -57
y2 =  6
y3 =  6

Step-by-step explanation:

x1=5 y1=2 x123 x1+8=2 523 5+8=57
x2=2 y2=2 x223 x2+8=2 (2)23 (2)+8=6
x3=1/2=21=0.5 y3=2 x323 x3+8=2 0.523 0.5+8=6



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