Question

2^x.2².2²=2³

32.35:3x=81

253.20050-13.(x-17)+11=33.22

(5²+3²).x+(5²- 3²).x- 40.x=10²

đây là dạng số tìm x các bạn giúp mình nhé

 

Answer 1

\(2^x.2^2.2^2=2^3\Rightarrow2^{x+2+2}=2^3\Rightarrow x+4=3\Rightarrow x=-1\)-1

\(\left(5^2+3^2\right).x+\left(5^2-3^2\right).x-40.x=10^2\)

\(\Rightarrow x.\left(5^2+3^2+5^2-3^2-40\right)=10^2\)

\(\Rightarrow x.\left(2.5^2-40\right)=10^2\)

\(\Rightarrow x.10=10^2\Rightarrow x=10^2:10\Rightarrow x=10\)

Answer 2

Nhầm kết quả đầu x= -1 nhá

Answer 3

đánh mũ bị lỗi sorry

Answer 4

\(2^x.2^2.2^2=2^3\Rightarrow2^{x+2+2}=2^3\Rightarrow x+4=3\Rightarrow x=-1\)

\(\left(5^2+3^2\right).x+\left(5^2-3^2\right).x-40x=10^2\)

\(\Rightarrow x.\left(5^2+3^2+5^2-3^2-40\right)=10^2\)

\(\Rightarrow x.\left(2.5^2-40\right)=10^2\)

\(\Rightarrow x.10=10^2\Rightarrow x=10^2:10\Rightarrow x=10\)