Answer:
49 x^4 - 4 = 0
(7 x^2 - 2) (7 x^2 + 2) = 0
Only the first term will have real roots
7 x^2 = 2
x = (2 / 7)^1/2 = .535 or -.535
A is the answer to the question
FH = HG =GF
—— —— ——
IK JK IJ
8 =HG =3.2
—. —— ——
32 JK IJ
or, 2 3.2
—— = ——
8 IJ
or,2IJ=3.2*8
or,IJ=25.6
———-
2
.•.IJ=12.8
Hope this might help you
