Question

Ajutor va rog dau coroana ​

Answer 1

Explicație pas cu pas:

23.

3x(x-1)+4x-4=0

3x²-3x+4x-4=0

3x²+x-4=0

3x²-3x+4x-4=0

3x(x-1)+4(x-1)=0

(3x+4)(x-1)=0

x = -4/3; x = 1

24.

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

x²-3x-4=0

x²+x-4x-4=0

x(x+1)-4(x+1)=0

(x+1)(x-4)=0

x = -1; x = 4

25.

2(x²+5)-16=-1-3x

2x²+3x-5=0

2x²-2x+5x-5=0

2x(x-1)+5(x-1)=0

(2x+5)(x-1)=0

x = -5/2; x = 1