2(4x+35)=510
4x+35=510:2
4x+35=255
4x=255-35
4x=220
x=220:4
x=55
vậy x=55
320+(413-x)=534
413-x=534-320
413-x=214
x=413-214
x=199
vậy x=199
(x-6)2=16
* (x-6)2=42 (x-6)2=(-4)2
x-6=4 x-6=-4
x=10 x=2
vậy x=10 hoặc x=2
3(9x+2)=60
9x+2=60:3
9x+2=20
9x=18
x=18:9
x=2
vậy x=2
2(4X+35)=510
4X+35=510/2
4X+35=255
4X =255-35
4X =220
X=220/4
X=55
VẬY X =55
2 ( 4x + 35) = 510
4x + 35 = 255
4x = 220
x = 55
320 + ( 413 - x ) = 534
413 - x = 214
x = 413 - 214
x = 199
\(\left(x-6\right)^2=16\)
\(\Leftrightarrow\orbr{\begin{cases}x-6=\sqrt{16}\\x-6=-\sqrt{16}\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x-6=4\\x-6=-4\end{cases}}\)
\(\Leftrightarrow\orbr{\begin{cases}x=10\\x=2\end{cases}}\)
Vậy x1 = 10 ; x2 = 2
3 ( 9x + 2 ) = 60
9x + 2 = 20
9x = 18
x = 2
Học tốt !!! :)))
320+(413-X)=534
413-X=534-320
413-X=214
X=413-214
X=199
VẬY X=199
3(9X+2)=60
9X+2=60/3
9X+2=20
9X=20-2
9X=18
X=18/9
X=2
VẬY X=2
\(\left(X-6_{^{ }}\right)^2\)=16
=>\(X^2\)-\(6^2\)=16
\(X^2\)-36=16
\(X^2\)=16+36
\(X^2\)=52
=>\(X^2\)=????
BẠN TỰ TÍNH MŨ NHA
đừng quên cho mk đấy