Question

Just choose one.. also if possible, check to see if the one I selected for the second question is correct? Don’t have to though. Also it’s a homework practice though

Answer 1

$x^2-6x+9=(x-3)^2$

As the second term is -6 (negative) the binomial expression must be one that includes a negative sign. Must be (x- ) and the second term of that binomial expresion has to be half the second term of the equivalent trinomial, in this case -3.

$(x-3)^2$

And by multiplying we obtain the trinomial.