1.(x-6)²=(x-3)²
x²-12x+36=x²-6x+9
x²-12x+36-<span>x</span>²<span>+6x-9=0
-6x+27=0
-6x= -27
x=4.5
2. </span><span>-2x</span>²<span> - 2x + 5= -x</span>²<span> - x - (1+x</span>²<span>)
</span><span>-2x</span>²<span> - 2x + 5+x</span>²<span>+x+1+x</span>²<span>=0
</span>-x+6=0
x=6
2 5/7 ×7 +3 1/2= 19+3 1/2= 22 1/2
А) -20
б)-16
В)-8.9
г)-.3ю36
Д)<u>-</u>5<u>1</u><em></em>
<em> 5</em>