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pushpendra mani

· started a discussion

· 1 Months ago

Al (Question:86856.0)

In the question. There is a which is also variable, otherwise it was good to check by answer,
Is there any tricky method in such a questions.

Question:
If 9x4 – 12x3 + 10x2 + px + 1 is a perfect square, then find the value of p.
Options:
A) -4
B) 4
C) 2
D) -2
Solution:

Ans: (a) 




Knowledge Expert

· commented

· 1 Months ago

Dear Student,
This ques is tricky and you will have to develop thinking ability and assume some value like in solution we have checked for (3x^2 - 2x+1)^2.

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