√1/(6-5х)=1/6
1/(6-5х)=1/36
6-5х=36
-5х=30
х=-6
А) 9a^2-16b^4 = (3a-4b^2)(3a+4b^2)
Б) <span>(3x-1)^2=(x+3)^2
9x^2-6x+1=x^2+6x+9
</span><span>9x^2-6x+1-x^2-6x-9=0
</span>8x^2-12x-8=0 - разделим на 4:
2x^2-3x-2=0
D=9-4*2*(-2)=25
x1 = (3-5)/4 = -0,5
x2 = (3+5)/4=2
Ответ: x1=-0,5; x2=2
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