Các câu hỏi tương tự
Bài 1: Rút Gọn
a)(x+7)(x-7)-x2
b)(5x-1)(5x+1)-(25x2+1)
c)(4x+1)(4x-1)-(4x-1)2
d)(3x-5)2-(3x+5)(3x-5)
-5x^2 (4x^2-5x+7)
câu 2: -3x(3/4x^2+2x-3)
Câu 3:(x^2-1) (x^2+2x)
5+4x-x+2=(5+4x).(7+5x)
5+4x-x+2=(5+4x).(7+5x)
Bài 1: Rút gọn
A=(7-2x)(7+2x)+(2x+7)2
B=(4x-5)2-(2x-1)(8x-5)
C=(5x-3)2-2(5x-3)(5-5x)+(5x-5)2
D=(2a+3b-c)(2a-3b+c)-(4a2-9b2-c2)
Bài 1: Rút gọn
A=(7-2x)(7+2x)+(2x+7)2
B=(4x-5)2-(2x-1)(8x-5)
C=(5x-3)2-2(5x-3)(5-5x)+(5x-5)2
D=(2a+3b-c)(2a-3b+c)-(4a2-9b2-c2)
Tìm x:
a) 4x(3x-7)-6(2x^2-5x+1)=12
b) (5x+3)(4x-1)+(10x-7)(-2x+3)=27
c) (8x-5)(3x+2)-(12x+7)(2x-1)=17
d) (5x+9)(6x-1)-(2x-3)(15x+1)=-190
Tìm x:
a) 4(18 - 5x) - 12(3x - 7) = 15(2x - 16) - 6(x + 14)
b) 5(3x + 5) - 4(2x - 3) = 5x + 3(2x + 12) + 1
c) 2(5x - 8) - 3(4x - 5) = 4(3x - 4) +11
d) 5x - 3{4x - 2[4x - 3(5x - 2)]} = 182
30 tháng 6 2021 lúc 9:39
(8x-3).(3x+2)-(4x+7).(x+4)=(4x+1).(5x-1)
![[̲̅ⓗ̲̅][̲̅ⓘ̲̅]...[̲̅ⓗ̲̅]...](https://hoc24.vn/images/avt/avt1142179_256by256.jpg)
Giải phương trình:
a, \(\frac{4x}{4x^2-8x+7}+\frac{5x}{4x^2-10x+7}=1\)1
b, \(\frac{x^4+4}{x^2-2}=5x\)