-0.3a(4a?-3)(2a?+5)=
-1.2a3 – 0.9a (2a2 + 5)
-1.2a3 – 1.8a3 – 4.5a
-1.2a3 – 1.8a3 = -3a3
-3a3 – 4.5a = -7.5a
X²+2x
при x=9898²+2*98=9604+196=9800
<span>при x= -202
-202</span>²+2*(-202)=40804-404=40400
10a²-a³
<span>при a=11
10*11</span>²-11³=1210-1331=-121<span>
при a=9
</span>10*9²-9³
810-729=81
(b^-2)^-4=(b^-2)1/4=(b^1/2)^1/4=b^1/2=b^-2
) 2x^2-4x=0
x(2x-4)=0
x=0
или 2x-4=0
2x=4
<span>x=2</span>