B5=b1*q^4=4
b9=b1*q^8=1/4
q^4=0,0625
q=+-0/5
<span>1) ( 2a - 1)^3 - 8a^3 + 5=8a^3-12a^2-6a-1-8a^2+5=-12a^2-6a+4
при a=-2
-12*(-2)-6*(-2)+4=24+12+4=40
</span>
2) ( 0,5b-2)^3 - (0.5b+2)^3 =0.5^3b^3-1.5b^2-12b-8-0.5^3b^3-1.5b^2-12b-8=-3b^2-24b-16
при и=-2
-3*(-2)-24*(-2)-16=6+48-16=38
2x^2+8-30x^2-120 = 0
-28x^2 - 112= 0
-28x^2=112
x^2= -4
x^2= +-2
A)24x^7-15^4+22x-0.3 b) 4x^3sinx+x^4cosx