Advertisements
Advertisements
Question
In the case find whether the trinomial is a perfect square or not:
x2 + 14x + 49
Sum
Solution
x2 + 14x + 49
= (x)2 + 2 × x × 7 + (7)2
= (x + 7)2 ...[a2 + 2ab + b2 =(a + b)2]
∴ The given trinomial x2 + 14x + 49 is a perfect square.
shaalaa.com
Factorising a Perfect Square Trinomial
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
In the case find whether the trinomial is a perfect square or not:
a2 - 10a + 25
In the case find whether the trinomial is a perfect square or not:
4x2 + 4x + 1
In the case find whether the trinomial is a perfect square or not:
9b2 + 12b + 16
In the case find whether the trinomial is a perfect square or not:
16x2 - 16xy + y2
In the case find whether the trinomial is a perfect square or not:
x2 - 4x + 16
