Solve this question & after solving convert this into as usual means change into
Answers
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Rajukumar111
Hey !!!
x - 1/x = 5
•°• ( a - b ) ² = a² + b - 2ab
similarly
(x - 1/x )² = x² + 1/x² - 2x×1/x
5² = x² + 1/x² -2
25 + 2 = x² + 1/x²
x² + 1/x² = 27 -----1) 1st Answer ✔
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now , 1/x⁴ + 1/x⁴
(1/x²)² + (1/x²)² can i write ?
hence, similarly
hence, a² + b² = ( a + b) ² - 2ab
since,
x⁴ + 1/x⁴ = ( x² + 1/x² ) ² - 2x² ×1/x²
x⁴ + 1/x⁴ = 27² - 2
x⁴ + 1/x⁴ = 729 - 2 ----[from 1st equation ]
x⁴ + 1/x⁴ = 727Answer
Answer:
STEPS OF CONSTRUCTION:
1.Draw line segment of length AB=8cm.
2. Draw any Ray AX making acute ∠BAX with AB
3. Draw a parallel to BY parallel to AX by making∠ABY=∠BAX.
4. Make 3 points A
1
,A
2
,A
3
on AX & 4 points B
1
,B
2
,B
3
,B
4
on BY such that
AA
1
=A
1
A
2
=A
2
A
3
=BB
1
=B
1
B
2
=B
2
B
3
=B
3
B
4
5. Join A
3
B
4
. Then it intersect AB at a point P.
Thus P is the point of dividing AB internally in the ratio 3:4.