Question

Find the square.

(5m + 7)^2

25m^2 + 35m - 49
25m^2 + 70m + 49
25m^2 + 70m - 49
25m^2 - 70m + 49
Won't let me pull this up on the calculator

Answer 1

the reason you cannot put this into your calculator is because m is a variable i.e. can take any value. you got to expand the square:
(5m+7)^2 = 25m^2+70m+49

Answer 2

generally, \[(a+b)^2 = a^2+ 2ab+b^2\]

Answer 3

answers 2 and 4 are the same answer what do I do if this happens

Answer 4

this means usually they are not the good ones xD

Answer 5

there not the same lol