Question

For what value of 'm' would (y + m)(y + m) be the factored form of y^2 - 6y + 9?

Answer 1

Please acquaint yourself with the concept "Perfect Square Trinomial".

Answer 2

Another way is to expand \((y + m)(y + m)\) and compare coefficients.

Answer 3

Simply factorize
\[y^2-6y+9\]
Or use the Newton equations,
\[m^2=9\]
\[2m=-6\]
Anyway, m=-3.

Answer 4

thanks