Question

Buna, mă puteti ajuta este urgent.
Ofer 50 de puncte.​

Answer 1

1) 4x(x-2)-5×(2x^2-3x+1)=4x^2-8x-10x^2+15x-5=-6x^2+7x-5

2) (6x+5)×(2x-3)=12x^2-18x+10x-15=12x^2-8x-15

3) (x^2-3)^2=x^4-6x^2+9

4) (4-3x)^2=16-24x+9x^2

5) (5x-2)×(5x+2)=25x^2-4

6) (3rad2x+ rad5)^2-(2rad 3x-rad 5)^2-(rad 3x+ rad 5)×(rad 3x-rad 5)=18x^2+6 rad 10 x+5-(12x-4 rad 15x+5)-(3x^2-5)=18 x^2+6 rad 10x-12x+4 rad 15x-5-3x^2+5=15x^2+6 rad 10x+4 rad 15x-12x+5

Sper ca te-am ajutat!!!!!

Answer 2

1) 4x²-8x-10x²+15x-5= -6x²+7x-5

2) 12x²-18x+10x-15=12x²-8x-15

3) (x²)²-2x²*(-3)+(-3)²=x^4+6x²+9

4) 16-24x+9x²

5) 25x²+10x-10x-4=25x²-4=(5x-2)(5x+2)

6) 18x²+6√10+5-(12x²-4√15+5-(3x²-5)=18x²+6√10+5-12x²+5√15-5-3x²+5=3x²+6√10+5√15