ok i am extremely confused i thought if you multiply fractions u multiply the denominator as well but in this problem of "completing the square" the denominator stays the same....
x^2-17x+72=0

Question

ok i am extremely confused i thought if you multiply fractions u multiply the denominator as well but in this problem of "completing the square" the denominator stays the same....
x^2-17x+72=0

anonymous · Answer

solve for x factorize it

anonymous · Answer

why is it 289/4 shouldnt it be 289/16

lgbasallote · Answer

what do you mean? can you show the part where the multiplication of fractions is not followed?

anonymous · Answer

x^2-17x____=-72
      1/2(-17)

anonymous · Answer

wait so when multiplying that it would be -17/2?

lgbasallote · Answer

you'd be multiplying -17/2 by -17/2

lgbasallote · Answer

then add that to both sides :)

anonymous · Answer

ahhhh i see no wonder its 289/4

anonymous · Answer

thank you beautiful

lgbasallote · Answer

you're welcome ^_^