http://oi58.tinypic.com/s1j8yu.jpg
5 f (x ) = 7x 2 + 4 =
5=7x2+4=
5-4=7x2=
1/2=7x=
0.5/7= xx=0.5/7
x=0.07
5a
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5 f (x ) = 7x 2 + 4 =
0.5/7= xx=0.5/7
x=0.07
