\(\left(3-x\right)^{20}:\left(3-x\right)^{10}=1\)
\(\left(3-x\right)^{20-10}=1\)
\(\left(3-x\right)^{10}=1\)
\(\left(3-x\right)^{10}=1^{10}\)
\(\Rightarrow3-x=1\)
\(x=3-1\)
\(x=2\)
\(\left(3-x\right)^{20}:\left(3-x\right)^{10}=1\)
\(\left(3-x\right)^{20-10}=1\)
\(\left(3-x\right)^{10}=1\)
\(\left(3-x\right)^{10}=1^{10}\)
\(\Rightarrow3-x=1\)
\(x=3-1\)
\(x=2\)
tim x, biet:
a,(3x-15)^7=0
b,4^2x-6=1
c,(3-x)^20:(3-x)^10=1(x khac 3)
d,(x-6)^3=(x-6)^2
1/ 120 - x : 4 = 34 : 311
2/ 80 chia het cho x; 36 chia het cho x; va 3 < x< 15
3/ x chia het cho 12; x chia het cho 15; x chia het cho 20; va x nho nhat khac 0
Bài 1: Tìm x
a. (-20) + x = -30 b. (-10) - x = -20
c. -10 + (-2) = -4 d. x + (-3) = -7
e. x - (-5) = -9 f. x (-11) = 12
h. 2x - 10 = 20 l. 4x - 8 = -8
k. -12 - (-2)x = -8
Bài 2: Tìm x
a. -20 - (10-x) = -3
b. 14 + (14-x) = -2
c. -15 - (x-3) = -7
d. (x+4) + (-20) = -8
e. -2x - 2 = -4
f. -2x + 4 = -4
l. -12 - (-2)x = -2 -4
Thank mn ạaa!!
( 3 -x)mũ 10 x :(3-x)mũ 20 =1 (x khác 3)
a, 120 - x : 4 = 34 : 311
b, 80 chia het cho x; 36 chia het cho x; va 3< x< 15
c, x chia het cho 12; x chia het cho 15; x chia het cho 20; va x nho nhat khac 0
bài 1:tìm x biết
a,(125-x)+25=98
b,100:(x+20)=68:34
c,(3.x+12).5=25.4-10
d,210:(2.x-3)-20=10
(10 X 20 X 30 X ... X 100)+(1 + 2 + 3 + ... + 100)-(-1 + -2 + -3 + ... + -25) = x (xϵZ)
Cho A = x+1/x-3; (x thuoc Z; x khac 3). Tim x de A la phan so toi gian
A=2 x 6 x 10 + 4 x12 x 20 +6 x 18 x 30 + ...+ 20 x 60 x 100 / 1 x 2 x 3 + 2 x 4 x 6 + 3 x 6 x 9 +...+ 10 x 20 x 30
Khó lắm đấy . Ai giải được bái luôn