Rozwiaz równania' skorzystaj że wzorów
1)(3x-4)^2+4(2x+1)^2=9x^2+16+4(4x^2+1)=9x^2+16+16x^2+4=25x^2+20
2)(3-2x)^2+(x+4)(x-3)-5(x+2)+7=9+4x^2+x^2-3x+4x-12-5x-10+7=-6+5x^2-4x
3)2(x-0,2)^2-x^2+(x+0,1)^2=2x^2+0,08-x^2=x^2+0,01=2x^2+0,09
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1)(3x-4)^2+4(2x+1)^2=9x^2+16+4(4x^2+1)=9x^2+16+16x^2+4=25x^2+20
2)(3-2x)^2+(x+4)(x-3)-5(x+2)+7=9+4x^2+x^2-3x+4x-12-5x-10+7=-6+5x^2-4x
3)2(x-0,2)^2-x^2+(x+0,1)^2=2x^2+0,08-x^2=x^2+0,01=2x^2+0,09