The question is rather poorly written; it should be 'squared'.
Howeve
a^(2) - 5a = 0
Factor
a(a-5) = 0
Hence
a = 0
& a - 5 = 0
a = 5
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"The answer" is the number that 'a' must be in order to make the statement true.
There are two answers.
a = zero
and
a = 5
a = 0
the value that makes this ewuation true 5a=a is 2a
-5a + b = 2 AND -a - 5b = 0 -5a + b = 2 b = 2 + 5a *using above -a - 5b = 0 -a - 5(2 + 5a) = 0 -a - 10 - 25a = 0 -26a = 10 a = 10/-26 *using 'a' value 5a + b = 2 5(10/-26) + b = 2 -25/13 -2 = -b b = 51/13 Therefore a = 10/-26 b = 51/13
A+5=-5a+5 A=-5a+5-5 (bring one of the 5 over)(not necessary) A=-5a (if big and small letters are the same, A=a=0; if not, when A=35,a=-7)
If: -5a = 300 Then: a = -60