nguyenbaonguyen nguyenbaonguyen
  • 06-10-2021
  • Mathematics
contestada

1. Tính:
a) 2x*(2x^2-3x+5)+6x^2
b) (2+x)*(2-x)-4
c) (x+5)^2-10x
2. Tìm x, biết:
a) 3*(x^2-2x+1)=3x^2+3
b) (3-x)^2-(x-1)*(2+x)=0

1 Tính a 2x2x23x56x2 b 2x2x4 c x5210x 2 Tìm x biết a 3x22x13x23 b 3x2x12x0 class=

Respuesta :

lanize253
lanize253 lanize253
  • 06-10-2021

Answer:

1.b (2+x)*(2-x)-4

2.a 3*(x^2-2x+1)=3x^2+3

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