Asked by Maria
solve by factoring
a^2 -121 = 0
(a-11)(a-11)
is this correct?
a^2 -121 = 0
(a-11)(a-11)
is this correct?
Answers
Answered by
Reiny
all you did was to factor it, but it said 'solve'
Besides you did not see the difference of squares to get
(a-11)(a+11) = 0
then
a = 11 or a = -11
Besides you did not see the difference of squares to get
(a-11)(a+11) = 0
then
a = 11 or a = -11
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