a) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
a) 5x + x = 39 – 311:39
b) 7x – x = 521 : 519 + 3.22 - 70
c) 7x – 2x = 617: 615 + 44 : 11
a) 5x + 3x = 36 : 33.4 + 12
4x + 2x = 68 – 219 : 216
a) 5x + x = 39 – 311:39
b) 7x – x = 521 : 519 + 3.22 - 70
c) 7x – 2x = 617: 615 + 44 : 11
6 - 7x = -48
6x=3x+1-5x+6x-5x+4x-9x+7x
7x - 5x = 28
|7x+1|-|5x+6|=0
Bài 1: Tách hạng tử thành nhân tử
a) x2 + 5x + 4
b) 2x2 + 7x - 22
c) x2 - 7x + 12
d) 2x2 + 11x + 15
e) 4x2 + 9x + 2
f) x2 + x - 6
g) x2 + 9x + 8
h) 3x2 - 10x - 48
I) x2 - 15x + 56
k) x2 + x - 2
l) x2 - 3x + 2
m) 5x2 + 6x + 1
x+9x+7x+5x=2244
x + 9x + 7x + 5x = 2244