Question

Resolva as equação
25×-6.5×+5=0

Answer 1

Resposta:

Explicação passo-a-passo:

$(5^{2})^{x}-6.5^{x}+5=0\\y=5^{x}\\y^{2}-6y+5=0$

$[tex]x_{1} =\frac{-(-6)+4}{2}\\x_{1}=\frac{+6+4}{2}\\x_{1}=\frac{+10}{2}\\x_{1}={5}\\\\x_{2}=\frac{-(-6)-4}{2}\\  x_{2}=\frac{+6-4}{2}\\x_{2}=\frac{+2}{2}\\x_{2}=1$= (-6)^{2}-4.1.5\\= 36-20\\= 16\\[/tex]