Question

10x +2 mũ 2 × 5 = 10 mũ 2 tìm x

Answer 1

`10x +2^2 × 5 = 10^2`

`=> 10x +4× 5 =100`

`=>10x +20=100`

`=>10x=100-20`

`=>10x=80`

`=>x=80:10`

`=>x=8`

`@ ThienVy`

Answer 2

10x+20=100

10x=80

x=8

Answer 3

10x+2².5=10²

10x+4.5=100

10x+20=100

10x=80

x=80:10

x=8

Answer 4

10x+2².5=10²

10x+4.5=100

10x+20=100

10x=80

x=80:10

x=8