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(x+2)(x+2)+(1-x)(1+x)=1
x²+2x+2x+4+1+x-x-x²=1
4x+5=1
4x=1-5
4x=-4/:4
x=-1
Proszę o najlepszą odpowiedź :)
x²+4x+4+1-x²=1
4x=1-4-1
4x=-4
x=-1
x²+4x+4+1-x²=1
4x=1-4-1
4x=-4 /:(-4)
x=-1