(x-2)^2-3(x+1)=(x+2)(x-2)-2
(x-2)(x-2) -3x-3= (x+2)(x-2)-2
x^2 -2x-2x+4- 3x-3= x^2-2x+2x-4-2
-2x-2x+4- 3x-3= -2x+2x-4-2
-7x=-7 /-7
x-1
(a-b)^2=a*2-2ab+b^2
(a-b)(a+b)=a^2-b^2
X^2-4x+4-3x-3=x^2-4-2
X^2-7x+1=X^2-6
-7x=-6-1
-7x=-7 /:(-7)
x=1
ZASTOSUJ WZORY SKRÓCONEGO MNOŻENIA
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(x-2)(x-2) -3x-3= (x+2)(x-2)-2
x^2 -2x-2x+4- 3x-3= x^2-2x+2x-4-2
-2x-2x+4- 3x-3= -2x+2x-4-2
-7x=-7 /-7
x-1
(a-b)^2=a*2-2ab+b^2
(a-b)(a+b)=a^2-b^2
X^2-4x+4-3x-3=x^2-4-2
X^2-7x+1=X^2-6
-7x=-6-1
-7x=-7 /:(-7)
x=1
ZASTOSUJ WZORY SKRÓCONEGO MNOŻENIA
(a-b)^2=a*2-2ab+b^2
(a-b)(a+b)=a^2-b^2
X^2-4x+4-3x-3=x^2-4-2
X^2-7x+1=X^2-6
-7x=-6-1
-7x=-7 /:(-7)
x=1