<span>1) x2+7x+10=0
2x+7x+10=0
9x+10=0
9x=-10
x=(-10)</span>÷9
x=-10/9
<span>2) -x2+8x-52=0
</span>-2x+8x-52=0
6x-52=0
6x=52
x=52÷6
x=26/3
<span>3) -x2-4x-3=0
</span>-2x-4x-3=0
-6x-3=0
-6x=3
6x=-3
x=(-3)÷6
x=-1/2
<span>4) -x2-14-50=0
</span>x=-32
<span>5) x2-12x+29=0
</span>x=29/10
<span>6) -x2+4x+5=0
x=-5/2
</span><span>7) -x2+8x-9=0
x=3/2
</span><span>8) x2-4x-2=0
x=-1
</span><span>9) x2+3x-4=0
x=4/5
</span><span>10) x2-14x+49=0
x=49/12
</span><span>11) x2+4x+20=0
x=-10/3</span>
=9х+6(х-6)=6 вотттт поправ
А2
1) 2^3 • 2^14 = 2^17
2) ( 2^2 )^4 • 2^7 = 2^8 • 2^7 = 2^15
3) 2^17 : 2^15 = 2^2 = 4
Ответ 4
А3
а) 0,18а^2с - 0,5b^2c = 0,5c( 0,36a^2 - b^2 ) = 0,5c( 0,6a - b )( 0,6a + b )
Б) 6с^4 - 48а^3с = 6с( с - 8а^3 )