jaxkso
jaxkso
02-02-2017
Mathematics
contestada
Solving quadratics equations by taking square root
Respuesta :
Аноним
Аноним
02-02-2017
#6
x^2 = 1
x = - 1 and x = + 1
#7
a^2 + 1 = 19
a^2 =18
a^2 =√ 9
√ 2
a = + 3
√ 2 and a = - 3
√ 2
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