Các câu hỏi tương tự
Giup em voi a
Giai cac bat phuong trinh sau va bieu dien tap nghiem cua bat phuong trinh tren truc so:
a. 2(3x-1)-2x<2x-1
b. 4x-8≥3(3x-2)+4-2x
c. 3(x-2)(x+2)<3x²+x
d. (x+4)(5x-1)>5x²+16x+2
Gi ải các phương trình sau (Đặt ẩn phụ)
a)( x2+x)2+4(x2+x)-12=0
b) (x2+2x+3)-9(x2+2x+3)+18=0
c) (x-2)(x+2)(x2-10)=72
giai bat phuong trinh va bieu dien ngiem tren truc so
x(x^2+2) > x^3-x+6
Tìm x:
a) x(x-2)-x+2=0
b) (3-2x)2-(x-1)2=0
c) 81x4-x2=0
d) x3+x2+27x+27=0
Tìm x:
a) x(x-2)-x+2=0
b) (3-2x)2-(x-1)2=0
c) 81x4-x2=0
d) x3+x2+27x+27=0
tìm x, biết:
a) 9x2+36=0
b) 3(x+4)-x2-4x=0
c) x(2x-1)-(x-2)(2x+1)=0
d) (2x-3)2-4x2=00
e)1 phần 3.x2-3x=0
f) x3-x2-x+1=0
ráng giúp mình nha
Tìm x
a, 3/4x*(x2-9)=0
b, x3-16x=0
c, (x-1)(x+2)-x-2=0
d, 3x3-27x=0
e, x2(x+1)+2x(x+1)=0
f, x(2x-3)-2(3-2x)=0
cau 1 giai phuong trinh sau a) 7 x -14 0 b) ( 3x +1 ) ( 2x-2) 0 c) ( 3x -1 ) x-2 cau 2 giai bat phuong trinh va bieu dien truc nghiem tren truc so a ) 2x+5 hoac ( )9 b) 3x +4 5x-3 c ) 3x-1 tren 4 2cau 3 cho tam giac a bc vuong goc tai a , co ab 12 cm , ac 16 cm . ke duong cao ah ( hthuoc bc )a) chung minh : tam giac hba thuoc tam giac abc b) tinh do dai bc,ah c) he ad,de,df,la phan giac lan luot cua cac goc bac,hdb,adc,c thuoc a b , d thuoc bc, f thuoc ab chung minh rang : ea phan eb db...
Đọc tiếp
cau 1 giai phuong trinh sau
a) 7 x -14 =0
b) ( 3x +1 ) ( 2x-2) =0
c) ( 3x -1 ) = x-2
cau 2 giai bat phuong trinh va bieu dien truc nghiem tren truc so
a ) 2x+5 < hoac ( = )9
b) 3x +4 <5x-3
c ) 3x-1 tren 4 >2
cau 3 cho tam giac a bc vuong goc tai a , co ab = 12 cm , ac =16 cm . ke duong cao ah ( hthuoc bc )
a) chung minh : tam giac hba thuoc tam giac abc
b) tinh do dai bc,ah
c) he ad,de,df,la phan giac lan luot cua cac goc bac,hdb,adc,c thuoc a b , d thuoc bc, f thuoc ab
chung minh rang : ea phan eb = db phan dc , fc phan fa = 1
ban nao nhanh minh k cho 10 k
Tìm x,biết:
a)(2x-3)2-49=0
b)2x.(x-5)-7.(5-x)=0
c)x2-3x-10=0