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Question
In the case find whether the trinomial is a perfect square or not:
16x2 - 16xy + y2
Sum
Solution
16x2 - 16xy + y2
= (4x)2 - 4 ×4x × y + (y)2
= a2 - 4ab + b2
...[Taking 4x = a, and y = b]
∴ The given trinomial cannot be expressed as a2 + 2ab + b2 . Hence, it is not a perfect square.
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Factorising a Perfect Square Trinomial
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