oblicz wartość wyrażeń 3([latex] x^{2} [/latex])-2([latex] x^{2} [/latex]-5x-1) dla: x=2 a(2ab+b)-b(a-2ab+[latex] a^{2} [/latex]) dla: a=0,1 b=-10

[latex]3( x^2 )-2( x^2 -5x-1)=3 x^2-2 x^2+10x+2=x^2+10x+2[/latex] [latex]2^2+10 cdot 2+2=4+20+2=26[/latex] =========== [latex]a(2ab+b)-b(a-2ab+ a^2)=2a^2b+ab-ab+2ab^2-a^2b=a^2b + 2ab^2[/latex] [latex]0,1^2 cdot (-10) + 2 cdot 0,1 cdot (-10)^2=0,01cdot (-10) + 2 cdot 0,1 cdot 100=-0,1 + 20=19,9[/latex]