Sammie1011
Sammie1011
29-05-2017
Mathematics
contestada
how do I solve this question?
Respuesta :
apologiabiology
apologiabiology
29-05-2017
this is a perfect square trnomial
(a+b)²=a²+2ab+b²
we see that a=5x and b=2
(5x)²+2(5x)(2)+2²=0
factor
(5x+2)²=0
set equal to zero
5x+2=0
5x=-2
x=-2/5
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