Find whether the trinomial is a perfect square or not :
9b2 + 12b + 16
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Using the formula
[∵ (x + y)2 = x2+ 2xy + y2 ]
Since, (9b2 + 12b + 16) cannot be expressed as a2 + 2ab + b2.
Hence, 9b2 + 12b + 16 is not a perfect square.
Answered By
a2 - 10a + 25
4x2 + 4x + 1
16x2 - 16xy + y2
x2 - 4x + 16