Someone help and plz make sure the answer is right iv have already missed 3 :(

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two

kaahe btau