\(16x+40=10.3^2+4+5\left(1+2+3\right)\)
\(16x+40=10.9+4+5.6\)
\(16x+40=90+4+30\)
\(16x+40=124\)
\(16x=124-40\)
\(16x=84\)
\(x=\dfrac{84}{16}=4\)
16x+40=10 . 3 mũ 2 + 5 . (1+2+3)
Tìm x :
16x + 40 = 10 . 3 mũ 2 + 5 . ( 1 + 2 + 3 )
(2x+1)^3-27=243^2:3^3
2x+2+2x+8=65:64
3*5x+^200-5*3x+98=70*125^40
11*3x+99-5*3x^962=81^40
70*4^2x+300+16x+148=140*4^300
Giup minh nha cac bam minh dang voi
A=99+95+91+....3-1-5-9-....93-97
B=1/2+1/4+1/8+1/16+......1/32+1/64
C=2-4+6x8+10-12+...+98-100+102
D=3/4x8/9x15/16x.....9999/10000
1, (2+4+6+...+100)
2, 10-(3-x)=-10+17
3, 17-(3+x)=2-(7-8)
4, (5+x)-(15-31)=-20
5, 17-(3+x)+15-3=2
6, (41-x)-(13-17)=40-50
7, -(52-x)+(40-42)=-57+13
Tính :
C= 1/5+1/10+1/20+1/40+...+1/1280D= 2/1*3+2/3*5+2/5*10+2/7*9+2/9*11+2/11*18+2/13*15E= 4/3*7+4/7*11+4/11*15+4/15*19+4/19*23+4/23*27G= 1/2+1/6+1/12+1/20+1/30+1/42+...+1/110H= 3/1*2+3/2*3+3/3*4+3/4*5+...+3/9*10Giúp mk nha *.*
1/2×(2×x-3)+105/2=-137/2 A,-12×25-25×75-25×13 B,-50/7×49/10-35/2×-10/7+ -25/3× -9/5 C,-354+265-156+125 D,-74+40-50+16-35 E,-2/3×4/5+-4/5×4/3-0,125
|x+3|+|-x-3|=20
-(-1-x)+(-x)^3+x(x^2-2)=-30
2*x*x*x+3*(-x)^2*x+4*(-x)^3-5*(-x)=-10
x^2(x-2)-16x+32=0
|x+3|=|2x-9|
(2x+9)^2=(x+15)^2
|x-15|-|2x+6|=0
