Answered

Select the approximate values of x that are solutions to f(x) = 0, where

f(x) = -2x2 + 9x + 9.


{–0.22, 1.00}


{-2, 9}


{–4.50, –4.50}


{–0.84, 5.34}


please help me need to answer asap......

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Verified Answer :

a=-2;b=9;c=9;
delta=b^2-4ac
root1=(-b+(delta^(0.5)))/(2a)  
root2=(-b-(delta^(0.5)))/(2a)

delta =153
root1 = -0.8423
root2 = 5.3423

Correct Answer is D

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