Question

Oblicz!!! 1. 4+2x=3x-3= 2. 3(3-2x)=4x-3 3. (5+x) nawias jest do kwadratu___=(x-5)(x+5) 4. (x+2) do kwadratu czylui (x+2)-2(x-1)(x+1)=3-xdo kwadratu 5. 2(x-1)do kwadratu - 2x=(x+1) do kwadratu+x do kwadratu

Answer 1

Zad 1.

4+2x=3x

-x=4

x=4

Zad 2.

3(3-2x)=4x-3

9-6x=4x-3

-2x=-12

x=6

Zad3

(5+x)^2=25+10x+x^2

Zad4.

(x+2)^2-2(x-1)(x+1)=3-x^2

x^2+4x+4-2(x^2-1)=3-x^2

x^2+4x+4-2x^2+2=3-x^2

4x=3-6

x=- 3/4