Tìm x biết: (Cùng số mũ)
----- Nội dung dịch tự động từ ảnh -----
Bài 4: Tìm x biết: (Cùng số mũ)
1) \( \left( 2x-1 \right)^2 = \frac{8}{27} \)
2) \( \left( 2x-1 \right)^2 = \frac{1}{4} \)
3) \( \left( 2-3x \right)^2 = \frac{9}{4} \)
4) \( \left( 2x+1 \right)^2 = \frac{16}{25} \)
5) \( \left( 5x+1 \right)^2 = \frac{36}{49} \)
6) \( \left( 3x-4 \right)^2 = \left( -\frac{3}{4} \right)^2 \)
7) \( \left( 1-\frac{2}{3} x \right)^2 = \frac{4}{9} \)
8) \( \left( \frac{3}{4}-7x \right)^2 = \frac{1}{4} \)
9) \( \left( \frac{4}{7}-\frac{1}{2} x \right)^2 = \frac{4}{9} \)
10) \( 3 \left( x-\frac{1}{2} \right)^3 = 81 \)
11) \( 2 \cdot \left( \frac{1}{4}+x \right)^3 = -\frac{27}{4} \)
12) \( 2 \left( x+\frac{1}{2} \right)^3 : 3 = -\frac{1}{81} \)
13) \( \left( \frac{2}{3}-x \right)^2 = 1 \)
14) \( \left( 2x-\frac{1}{5} \right)^2 = \frac{16}{25} \)
15) \( \left( \frac{2}{5}-3x \right)^2 = \frac{1}{5} = \frac{4}{25} \)
Bài 4: Tìm x biết: (Cùng số mũ)
1) \( \left( 2x-1 \right)^2 = \frac{8}{27} \)
2) \( \left( 2x-1 \right)^2 = \frac{1}{4} \)
3) \( \left( 2-3x \right)^2 = \frac{9}{4} \)
4) \( \left( 2x+1 \right)^2 = \frac{16}{25} \)
5) \( \left( 5x+1 \right)^2 = \frac{36}{49} \)
6) \( \left( 3x-4 \right)^2 = \left( -\frac{3}{4} \right)^2 \)
7) \( \left( 1-\frac{2}{3} x \right)^2 = \frac{4}{9} \)
8) \( \left( \frac{3}{4}-7x \right)^2 = \frac{1}{4} \)
9) \( \left( \frac{4}{7}-\frac{1}{2} x \right)^2 = \frac{4}{9} \)
10) \( 3 \left( x-\frac{1}{2} \right)^3 = 81 \)
11) \( 2 \cdot \left( \frac{1}{4}+x \right)^3 = -\frac{27}{4} \)
12) \( 2 \left( x+\frac{1}{2} \right)^3 : 3 = -\frac{1}{81} \)
13) \( \left( \frac{2}{3}-x \right)^2 = 1 \)
14) \( \left( 2x-\frac{1}{5} \right)^2 = \frac{16}{25} \)
15) \( \left( \frac{2}{5}-3x \right)^2 = \frac{1}{5} = \frac{4}{25} \)