x^2+16/x^2=57 find x-4/x
Answers
Answer:
Subtract 5757 from both sides of the equation.
x2−16x=−57x2-16x=-57
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of bb.
(b2)2=(−8)2(b2)2=(-8)2
Add the term to each side of the equation.
x2−16x+(−8)2=−57+(−8)2
hope it helps
Step-by-step explanation:
chun ja here
Answer:
Subtract
57
from both sides of the equation.
x
2
−
16
x
=
−
57
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of
b
.
(
b
2
)
2
=
(
−
8
)
2
Add the term to each side of the equation.
x
2
−
16
x
+
(
−
8
)
2
=
−
57
+
(
−
8
)
2
Simplify the equation.
Tap for more steps...
x
2
−
16
x
+
64
=
7
Factor the perfect trinomial square into
(
x
−
8
)
2
.
(
x
−
8
)
2
=
7
Solve the equation for
x
.
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x
=
±
√
7
+
8
The result can be shown in multiple forms.
Exact Form:
x
=
±
√
7
+
8
Decimal Form:
x
=
10.64575131
…
,
5.35424868
…