doprowadź do najprostszej postaci:
a) -3(0,1x-10)²=
b) 2,7(0,3x+10y)²=
Proszę:
a.) -3(0,1x-10)^2=-3*(0,1x-10)*(0,1x-10)=3(0,01x^2-x-x+100)=0,03x^2-3x-3x+300=0,03x^2-6x+300
b.) 2,7(0,3x+10y)^2=2,7*(0,3x+10y)*(0,3x+10y)=2,7(0,09x^2+3xy+3xy+100y^2)=0,243x^2+8,1xy+8,1xy+270y^2=
=0,243x^2+16,2xy+270y^2
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Proszę:
a.) -3(0,1x-10)^2=-3*(0,1x-10)*(0,1x-10)=3(0,01x^2-x-x+100)=0,03x^2-3x-3x+300=0,03x^2-6x+300
b.) 2,7(0,3x+10y)^2=2,7*(0,3x+10y)*(0,3x+10y)=2,7(0,09x^2+3xy+3xy+100y^2)=0,243x^2+8,1xy+8,1xy+270y^2=
=0,243x^2+16,2xy+270y^2