Create equivalent expressions in the equation that all have equal bases.
52x−3=5352x-3=53
Since the bases are the same, then two expressions are only equal if the exponents are also equal.
2x−3=32x-3=3
Solve for xx.
a) 5^x=125
b)3^2x=81
c)5^2x-3-2*5^2=5^2*3
Bài 3:
c) 5 mũ x + 3 = 125 d) 2 mũ 2x + 3 + 2 mũ 2x + 1
Tìm x
a) 5^x=125
b)3^2x=81
c)5^2x-3-2*5 = 5^2 *3
a)42x - 6 = 1
b)2x-1= 16
c)5<5x<125
d)5x+1= 125
e)52x-3 - 2. 52 = 52 . 3
5 mũ 2x+3+25.5 (5 mũ x )tất cả mũ=125 mũ 3 :5 mũ 2
3) Tìm x của N biết a) 80 - ( 2 + 2x ) : 2 = 40 b) 11^2 - 121 = 0 c) 5^x+3 - 7 × 5^2 = 5^2 × 18 d) x^10 = x e) x^10 = 1^x g) ( 2x - 15 )^5 = ( 2x - 15 )^3 4) Thực hiện phép tính a) 5^3 ÷ 5^2 + 2^2 × 3 b) 4^3 × 125 - 125 ÷ 5^2 c) 6^2 × 28 + 72 × 6^2 d) 5^6 ÷ 5^4 + 3 × 3^2 - 80 e) 2^3 × 19 - 2^3 × 14 × 1^2021
(|2x-5|+1).(x^3-125)=0
a, 2x . 4 = 128
b, x15 = x 1
c, (2x + 1)3 = 125
d, (x – 5)4 = (x - 5)6
e, x10 = x
f, (2x -15)5 = (2x -15)3
Tính x biết
125 : (2x -3) =55: 53