Question
If x=-5+√−4, then the value of the expression x4+9x3+35x2-x+4 is
Answer: Option B
:
B
x+5 =4i ⇒ x2+10x+25=-16
Now, x4+9x3+35x2-x+4
=(x2+10x+41)(x2-x+4)-160=-160
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:
B
x+5 =4i ⇒ x2+10x+25=-16
Now, x4+9x3+35x2-x+4
=(x2+10x+41)(x2-x+4)-160=-160
Was this answer helpful ?
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