What must
be added to x2 + 14x to make
the expression a perfect square?
Solution
a=1, b=14,c=?
b2
= 4ac
(14)2
= 4 x 1 x c
196 = 4c
196 = 4c
4
4
49 = c
Hence
number to be added is 49
And the expression
will be: x2 + 14x +49=0
TRY THIS……………………
What must
be added to x2 + 10x to make
the expression a perfect square?
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