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5xsq-2x=4
5xsq-2x-4=0..........(this Q have a complex root)
to solve
we can use this formula
x=(-b+or- i(sqrt of 4ac-b sq))/2a
so
a=5, b=-2, c=4, &
4*a*c-b sq =4*5*4-4
=76
x=(-(-2)+or- i(sq of76) )/2*5
x=(2+i sq76)/10 OR
x=(2- i sq(76))/10
5xsq-2x-4=0..........(this Q have a complex root)
to solve
we can use this formula
x=(-b+or- i(sqrt of 4ac-b sq))/2a
so
a=5, b=-2, c=4, &
4*a*c-b sq =4*5*4-4
=76
x=(-(-2)+or- i(sq of76) )/2*5
x=(2+i sq76)/10 OR
x=(2- i sq(76))/10
0
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