Tìm x:
a) X + 2143 = 4465
b) X - 2143 = 4465
c) X : 2 = 2403
d) X x 3 = 6963
Tìm x biết
a. x – 2143 = 4465
b. x x 3 = 6963
a. x – 2143 = 4465
x = 4465 + 2143
x = 6608
b. x x 3 = 6963
x = 6963 : 3
x = 2321
giúp Mik bài này với
Tìm x
a/ x-2143= 1341 b/x- 2146 = 4146
c/ x+ 528= 1322+249 d/ x - 3145 =3915
giúp mik nha!@
a) x -2143=1341
x = 1341 + 2143
x = 3484
b) x-2146=4146
x = 4146+2146
x =6292
c) x+528 = 1322 + 249
x + 528=1571
x =1571-528
x =1043
d) x -3145=3915
x =3915+3145
x =7060
X-2143=1341
= 1341+2143
=3484.
X-2146=4146
=4146+2146
= 6292
X+528=1322+249
=1322+249
=1571-528
= 1043
X-3145=3915
=3915 +3145
= 7060.
Tìm x:
a, x(2x – 3) – 2(3 – 2x) = 0
b, (x – 3)(x2 + 3x + 9) – x(x + 2)(x – 2) = 1
c, 4x2 + 4x – 6 = 2
d, 2x2 + 7x + 3 = 0
\(a,\Leftrightarrow\left(2x-3\right)\left(x+2\right)=0\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{3}{2}\\x=-2\end{matrix}\right.\\ b,\Leftrightarrow x^3-27-x^3+4x=1\\ \Leftrightarrow4x=28\Leftrightarrow x=7\\ c,\Leftrightarrow4x^2-4x-8=0\\ \Leftrightarrow x^2-x-2=0\\ \Leftrightarrow\left(x-2\right)\left(x+1\right)=0\Leftrightarrow\left[{}\begin{matrix}x=2\\x=-1\end{matrix}\right.\\ d,\Leftrightarrow2x^2+6x+x+3=0\\ \Leftrightarrow\left(x+3\right)\left(2x+1\right)=0\Leftrightarrow\left[{}\begin{matrix}x=-3\\x=-\dfrac{1}{2}\end{matrix}\right.\)
Tính - 1 3 4 ; - 2 1 4 3 ; - 0 , 2 2 ; - 5 , 3 0
Đặt tính rồi tính: 267 + 2143
Tính hợp lí: B = 2 15 + 2 35 + 2 63 + 2 99 + 2 143
8632632+2143 =
Ai xong vào meet ko/ Ai xong mình tick nhá.
TL;
8634775 Có nhé
k cho mình
HT
TL:
8632632+2143 =8634775
HT
@@@
8632632 + 2143 = 8 634 775
/HT\
3415+3146+2143+1246=???
nhanh nhất mk tk nhé!!!
Tìm x:
a) (x+2)2+(x-1)2+(x-3)(x+3)-3x2=-8
b) 2021x(x-2020)-x+2020=0
\(a,\Rightarrow x^2+4x+4+x^2-2x+1+x^2-9-3x^2=-8\\ \Rightarrow2x=-4\\ \Rightarrow x=-2\\ b,\Rightarrow2021x\left(x-2020\right)-\left(x-2020\right)=0\\ \Rightarrow\left(2021x-1\right)\left(x-2020\right)=0\\ \Rightarrow\left[{}\begin{matrix}x-2020=0\\2021x-1=0\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=2020\\x=\dfrac{1}{2021}\end{matrix}\right.\)