Question

[Trần Khánh Linh]

a)2²+2^x+3=144 

b)(\(\sqrt{9}+\sqrt{4}\)).\(\sqrt{x}\)=10

c)(x+\(\dfrac{1}{2}\))²=\(\dfrac{4}{25}\)

Answer 1

[nguyễn kim kiều]

a, x=2=35/2

x=log(35/2)

x=log(35)-log(20)

x=log(35)-1

Answer 2

[MCPEVP]

b) \(\left(\sqrt{9}+\sqrt{4}\right).\sqrt{x}=10\)

\(\left(3+2\right).\sqrt{x}=10\)

\(5.\sqrt{x}=10\)

\(\sqrt{x}=2\)

\(x=\sqrt{2}\)