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HETAV PATEL

Grade 11,

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Please solve a 4 - 41a 2 - 72a + 112 =0 I have doubt in this biquadratic..Will please somebody solve this kind of biquadratic equation?????

Please solve a4 - 41a2 - 72a + 112 =0
I have doubt in this biquadratic..Will please somebody solve this kind of biquadratic equation?????

Grade:11

2 Answers

Arun
25750 Points
4 years ago
Dear student
 
just put x = 1 and you get the expression 0 hence (x -1) is a factor
now x-1 will completely divide it.
 
hence (x-1) (x^3 +x^2 -40x -112)
 
now
 
cubic polynomial is zero at x = 7
hence x-7 is a factor
 
now x^2 + 16 + 8x is remaining = (x+4)^2
Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

This equation is not biquadratic as it is not void of a^1 term

Kindly check and repost

Regards

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