Question

when asked to factor the
${x}^{2} - 144$
a student gives the answer
$(x - 12)(x - 12)$
what is wrong with this answer?
A. there is nothing wrong with this answer.
B. both minus signs should be plus signs.
C. one of the minus signs should be a plus sign.
D. -1 is also a factor

Answer 1

C. One of the minus sign should be a plus sign.