SOLUTION: State the value(s) of k that make each of the following a perfect square.
A)25x^2-70x+k
B)x^2+x+k
C)81x^2+kx+36
D)kx^2-48x+64
Thank you in advance.
Algebra.Com
Question 826089: State the value(s) of k that make each of the following a perfect square.
A)25x^2-70x+k
B)x^2+x+k
C)81x^2+kx+36
D)kx^2-48x+64
Thank you in advance.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
A.
complete the square
add a number in parentheses and then subtract it after parentheses
=>
so, the perfect square is in expanded form
B.
complete the square
=>
so, the perfect square is in expanded form
C)
or
...as you can see, is equal to a product of and which is
so,
I hope you can do the last one following these examples....
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