Question

Timd x:

a)(x-5/3)²=49/16

b)2x²⁹=3x³⁵

c)(7x-3)⁶=(3-7)¹⁰

 

 

Answer 1

a)\(\left(x-\frac{5}{3}\right)^2=\frac{49}{16}\)

    \(\left(x-\frac{5}{3}\right)^2=\left(\frac{7}{4}\right)^2=\left(-\frac{7}{4}\right)^2\)

\(\Rightarrow\left[\begin{array}{nghiempt}x-\frac{5}{3}=\frac{7}{4}\\x-\frac{5}{3}=-\frac{7}{4}\end{array}\right.\)\(\Rightarrow\left[\begin{array}{nghiempt}x=\frac{41}{12}\\x=-\frac{1}{12}\end{array}\right.\)

               Vậy \(x=\frac{41}{12}=-\frac{1}{12}\)

Answer 2

b)2x²⁹=3x³⁵

   \(\Rightarrow\frac{x^{29}}{3}=\frac{x^{35}}{2}\)(thiều trường hợp)