im looking at my notes, trying to do this problem and im down to
x = -4 plus or minus the sq rt of 44 all over 2
x = -4 plus or minus the sq rt of 4 times 11 all over 2
x = -4 plus or minus 2 square root 11 all over 2
then the next step states
x = 2 (-2 plus or minus the square root of 11) all over 2
i dont get how that happened
can someone explain this please?
x = -4 plus or minus the sq rt of 44 all over 2
x = -4 plus or minus the sq rt of 4 times 11 all over 2
x = -4 plus or minus 2 square root 11 all over 2
then the next step states
x = 2 (-2 plus or minus the square root of 11) all over 2
i dont get how that happened
can someone explain this please?