Question

a) 2(x+2)la patrat - (3-x)la patrat - 4=2(x la patrat + 4)-(x-1)la patrat
b) 2x=3.6
c) x supra 3 =5
d) 4(2x+3)-2(5x+1)= -3(x-5)-1
e) (x-2)la patrat +(x-1)(x+1)=(x+3)(x-4)+x la patrat
f) 2.5x=7.5
g) x supra 3 = 4 supra 5
h) 2(x+1)-3(1-2x)=4(x-2)+3(x+4)

Answer 1

Sper ca ai priceput.

Answer 2

^ inseamna la putere
a) 2(x^2+4x+4)-(9-6x+x^2)-4 = 2x^2+8-(x^2-2x+1)
2x^2+8x+8-9+6x-x^2-4 = 2x^2+8-x^2+2x-1
x^2+14x-5 = x^2+2x+7 
x^2-x^2+14x-2x = 7+5 
12x = 12
x = 1

b) 2x = 36/10 
x = 36/10*1/2 
x = 18/10 = 9/5 

c) x/3= 5 
x = 3* 5
x = 15 

d) 8x+12-10x-2 = -3x+15-1 
-2x+10 = -3x+14
-2x+3x = 14-10 
x = 4 

e) x^2-4x+4+x^2-1 = x^2-4x+3x-12+x 
2x^2-4x+3 = x^2-12
2x^2-x^2-4x = -12-3 
x^2-4x = 15 
(x-2)^2 = 15 

f) 5/2x=15/2
x =15/2*2/5 
x = 3

g) x/3 = 4/5 
x = 3*4/5 
x = 12/5 

h)2x+2-3+6x = 4x-8+3x+12 
8x-1 = 7x+4 
8x-7x = 4+1 
x = 5