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a fost răspuns

a)(x-1)la putere2-2(x+3)=5x-(x-2)+x la puterea2.
b)(x+2)la puterea2+2(x-1)(x+1)=3x la puterea2-(x+2).
c)(x-2)(x+2)+(x-3)la puterea2=2xLa puterea2-(-x+1).
2 a)2(-x+3)-4(x+2)=-x-1
b)x-3(x+1)=-2x+x(-3)
c)2x-(-x+1)=-x+6

Răspuns :

Mihaelap
a) (x - 1)² - 2(x + 3) = 5x - (x - 2) + x²
x² - 2x + 1 - 2x - 6 - 5x + x - 2 - x² = 0
- 8x - 7 = 0
x = - 7/8
b) (x + 2)² + 2(x² - 1) = 3x² - (x + 2)
x² + 4x + 4 + 2x² - 2 - 3x² + x + 2 = 0
5x + 4 = 0
x = - 4/5
c) x² - 4 + (x - 3)² = 2x² - (-x + 1)
x² - 4 + x² - 6x + 9 - 2x² - x + 1 = 0
- 7x + 6 = 0
x = 6/7
2.
a) - 2x + 6 - 4x - 8 + x = - 1
- 5x = 2 - 1
x = - 1/5
b) x - 3x - 3 + 2x + 3x = 0
3x = 3
x = 1
c) 2x + x - 1 + x = 6
4x = 7
x = 7/4
MinnieMousee
Sper ca te-am ajutat :)
Vezi imaginea MinnieMousee
Vezi imaginea MinnieMousee

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