9x⁴- 148 x² + 64 = 0
find x = ?
Answers
Answered by
1
Answer:
x=+-4,+-2/3
Step-by-step explanation:
9x4-148x2+64=0
9x4-144x2-4x2+64=0
9x2(x2-16)-4(x2-16)=0
(9x2-4)(x2-16)=0
x=+-4,+-2/3
Answered by
0
Answer:
Let y=x²
The given equation reduces to a quadratic equation in ‘y’ as
9y²-148y+64=0
=> y=148+-√(-148)²-4(9)(64)
______________________
2.9
=148+-√19600
____________
18
=148+-140
________
18
=16 or 4
_
9
=>x²=16 or x²=4
_
9
=>x=+-4 or x=+-2
_
3
Similar questions