f, x^45-x^43=5^42.(5^3-5)
g,7^2x+1+7^2x-1=50.72021
h,(x-1).(x+1).(x^2+1).(x^4+1)=255
i, (x^2+2x+1).(x^2+2x+3)=99
k,(x^2+5x).(x^2+5x-2)=525
giúp mik vs ạ cảm ơn trc
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Sinh Học lớp 12
