rozwiąż równania
2x(3+5)=2x-(2+7x)
3x(2+3)=3(7x+2)
10(5x+3)=(x+2)(x+2)
2x-(3x+2)=7-(7x+7
plsss szybko



Odpowiedź :

2x(3+5)=2x-(2+7x) 6x + 10x = 2x -2 -7x 6x+10x-2x+7x = -2 21x = -2 x= -2/21(ułamek) 3x(2+3)=3(7x+2) 6x + 9x = 21x + 6 6x +9x -21x = 6 15x -21x =6 -6x = 6 x = -1 10(5x+3)=(x+2)(x+2) 50x + 30 = x² + 2x + 2x + 4 50x-2x-2x - x²= 4 46x - x² = 4 2x-(3x+2)=7-(7x+7) 2x -3x -2 = 7 - 7x - 7 2x - 3x + 7x = 7 - 7 +2 6x = 2 x = 2/6 = 1/3