Asked by april
what can you put in place of the ? to make x^2+14x+? a perfect square?
Answers
Answered by
Damon
x^2 + 14 x + (14/2)^2
so 49
x^2 + 14 x + 49
= (x+7)^2
if
x^2 + b x
then
x^2 + b x + (b/2)^2
is perfect square
so 49
x^2 + 14 x + 49
= (x+7)^2
if
x^2 + b x
then
x^2 + b x + (b/2)^2
is perfect square
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