\(\frac{\left[35\left(27^2+2.9^{11}\right)\right]}{\left[15\left(8^{16}-12.3^{19}\right)\right]}=5,2\)
\(\frac{\left[35\left(27^2+2.9^{11}\right)\right]}{\left[15\left(8^{16}-12.3^{19}\right)\right]}=5,2\)
tính ; 2^19*27^3+15*4^9*9^4/6^4*2^10+12^10
a. ) x-22/8 + x-21/9 + x-20/10 + x-19/11 =4
b -x+12/7 + -x+13/6 = -x+15/4 + -x+16/3
Giải phương trình
1) 16-8x=0
2) 7x+14=0
3) 5-2x=0
4) 3x-5=7
5) 8-3x=6
6) 8=11x+6
7)-9+2x=0
8) 7x+2=0
9) 5x-6=6+2x
10) 10+2x=3x-7
11) 5x-3=16-8x
12)-7-5x=8+9x
13) 18-5x=7+3x
14) 9-7x=-4x+3
15) 11-11x=21-5x
16) 2(-7+3x)=5-(x+2)
17) 5(8+3x)+2(3x-8)=0
18) 3(2x-1)-3x+1=0
19)-4(x-3)=6x+(x-3)
20)-5-(x+3)=2-5x
Bài 1: Phân tích đa thức sau thành nhân tử
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
Bài 4: Tính quý giá biểu thứca) 2 + 4 + 6 + 8 +… + 34 + 36 + 38 + 40b) 3 + 5 + 7 + … + 35 + 37 + 39 + 41c) 3 + 6 + 9 + 12 + … + 45 + 48 + 51d) 4 + 8 + 12 + 16 + … + 40 + 44 + 48 + 52
B1. làm tính
a, (930-2719) : 357+ (1259 - 2512)
b, (1012+511. 29 -53 . 28) : ( 4. 55. 106)
c, (2710 - 5 . 814 . 312 + 4 . 98 . 38 )
B2. Tìm x
a, ( 4x4 + 3x3 ) : ( -x3 ) + ( 15x2 + 6x ) : 3x = 0
b, (x2 - 1/2x ) : 2x - (3x -4 )2 : (3x-1) = 0
1) (4-3x) (10x-5)=0
2) (7-2x) (4+8x) = 0
3) (9-7x) (11-3x) = 0
4) (7-14x) (x-2) = 0
5) (2x+1) (x-3) = 0
6) (8-3x) (-3x+5) = 0
7) (16-8x) (2-6x) = 0
8) (x+4) (6x-12) = 0
9) (11-33x) (x+11) = 0
10) (x-1/4) (x+5/6) = 0
11) (7/8-2x) (3x+1/3) = 0
12) 3x - 2x^2 = 0
13) 5x + 10x^2 = 0
14) 4x + 3x^2 = 0
15) -8x^2 + x =0
16) 10x^2 - 15x = 0
17) x^2 -4 =0
18) 9 - x^2 = 0
19) x^2 -1 = 0
20) (x-3) (2x-1) = (2x-1) ( 2x+3)
21) (5+4x) (-x+2) = (5+4x) (7+5x)
22) (4+x) (x-5) = (3x-8) (x-5) = 0
23) (3x-8) (7-21x) - (9+2x) (7-21x)
24) (10+ 7x) (x+1) = (9x-2)(x-1)
25) (9x-4) (x-1/2) - (x-1/2) (6+x) = 0
26) 9x^2 - 1 = (3x-1) (x+4)
27) (x+7) (3x+1) = 49-x^2
28) (2x+1)^2 = (x-1)^2
29)x^3- 5x^2+6x = 0
30) 3x^2 + 5x + 2 = 0
Giảii giúpp mìnhh đyy mọii ngườii .
giup minh phan tich da thuc thanh nhan tu
1)x^2+4x+3
2)x^2-4x+3
3)x^2-x-5
4)x^2+4x-5
5)-x^2-x+6
6)x^2+7x+10
7)-x^2-3x+10
8)x^2+7x+12
9)x^2+4x+3
10)(x^2-2x+63)
11)x^2+10x+24
12)-x^2-4x+21
13)2x^2+11x+12
14)x^2-x+30
15)x^2+11x+30
16)2x^2+5x-12
17)x^2-5x-14
18)2x^2+9x+9
19)x^2+x-72
20)-2x^2-15x+27
21)x^2-x-12
22)-x^2+x+15
23)-x^2+5x+14
24)x^2-7x-18
lam on !!!!!!!!!!!!!!!!!!!!!!!.....!
Rút gọn phân thức sau
B=35(278+2.911)/15(816-12.319)
Làm nhanh mình tick