Oblicz wartości liczbowe wyrażeń:
a) (x²-2x+3)-(2x²-5x-1) dla x=2
b) a(2ab+b)-b(a-2ab+a²) dla a=0,1 i b=-10
Dam naj i 16 pkt!
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a) (x^{2}-2x+3)-(2x^{2}-5x-1)= 4-4+3-8+10+1=6
b) a(2ab+b)-b(a-2ab+a^{2}) = 0,1(-2-10)+10(0,1+2+0,01)= -2-1+1+20+0,1=18,1