1) (2+p)
2)(6t-(t-p)) * (6t + (t-p))=(5t+p) * (7t - p)
3)25a^2 - 81b^2 - 25a^2=81b^2=81*0,01=0,81
<span>(х-9)</span>²<span>=(х-3)</span>²
<span>х</span>²-18х+81=х²-6х+9
-18х+6х=9-81
<span>-12х=-72
х=6
</span>
<span>2*x^3-3*x^2-4 = (2*x^2 + x + 2)(x - 2) = 0</span>
-(50000-1397,3)+(20,4+34,3)=-50000+1397,3+20,4+34,3=-50000+1452=-48548