solve these
1.x to the power 4+4.
2. x to power 4 -1.
3.x to the power 4+ x to power 2+1
Answers
Answered by
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1 ) x^4 + 4 =0
x^4 = -4
we see LHS is positive term but RHS is negative term
so here real solution is not possible .
2) x^4 -1 =0
(x^2+1)(x^2-1)=0
here x^2 + 1 ≠0
(x -1)(x +1)=0
x = 1 , -1
so, answer is -1 and 1
3) x^4 +x^2 +1 =0
let x^2 =t
t^2 + t +1 =0
find Discrimannt =1 -4 <0
so, no real solution possible
x^4 = -4
we see LHS is positive term but RHS is negative term
so here real solution is not possible .
2) x^4 -1 =0
(x^2+1)(x^2-1)=0
here x^2 + 1 ≠0
(x -1)(x +1)=0
x = 1 , -1
so, answer is -1 and 1
3) x^4 +x^2 +1 =0
let x^2 =t
t^2 + t +1 =0
find Discrimannt =1 -4 <0
so, no real solution possible
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0
Answer:jfcgvfhghcvfjgv
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