What
must be added to x2 + 5x to
make the expression a perfect square?
Solution
a=1,
b=5,c=?
b2
= 4ac
(5)2
= 4 x 1 x c
25
= 4c
25 = 4c
4 4
25/4 = c
Hence
number to be added is 25/4.
TRY
THIS……………………
NECTA
2013, QN. 10a
What
must be added to x2 + 8x to
make the expression a perfect square?
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