javiy
javiy
10-01-2017
Mathematics
contestada
Solve each equation.
(x + 3)(x - 3) = 16 - 2x 2
Respuesta :
jlomonte
jlomonte
10-01-2017
(x+3)(x-3)=16-2x^2
x^2-3x+3x-9=16-2x^2
x^2+2x^2=16+9
3x^2=25
x^2=25/3
x=
+/-√25/3
x=+/- 5√1/3
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