Asked by Jetta
is 9x^2-36x+25 a perfect square?
the answer is no
the answer is no
Answers
Answered by
Henry
9X^2 - 36X + 25.
Test it by taking the sqrt of the
first and last term, place them in
a parenthesis and follow procedure
for removing parenthesis:
( 3X - 5 )^2 = 9X^2 - 90X + 25,
It didn't pass the test; the 2nd
term is wrong. No, it is not a
perfect square
Let's test another one:
X^2 + 10X + 25
( X + 5 )^2 = X^2 + 10X + 25.
This is a perfect square.
Test it by taking the sqrt of the
first and last term, place them in
a parenthesis and follow procedure
for removing parenthesis:
( 3X - 5 )^2 = 9X^2 - 90X + 25,
It didn't pass the test; the 2nd
term is wrong. No, it is not a
perfect square
Let's test another one:
X^2 + 10X + 25
( X + 5 )^2 = X^2 + 10X + 25.
This is a perfect square.
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