TÌM x, BIẾT: (2x-5)(8x-1)+(4x-9)(1-4x)=16
BT1: cho -3x(x+5)=-3x2-15x
(x+3)(x+2)=x2+5x+6
Tìm x biết:
--3x(x+5)+(x+3)(x+2)=7
BT2:Cho(2x+1)2=4x2+4x+1
(2x+1)(2x-1)=4x2-1
Tìm x biết:
(2x+1)2-(2x+1)(2x-1)=19
BT3: Tìm x biết:
a)x(x+1)-x(x+5)=9
b)4x2(x+5)-8x(x+7)=13
Tìm x biết:
a, 16x² – 9(x + 1)²= 0
b, x2 (x – 1) – 4x2 + 8x – 4 = 0
c, x(2x – 3) – 2(3 – 2x) = 0
d, (x – 3)(x² + 3x + 9) – x(x + 2)(x – 2) = 1
e, 4x² + 4x – 6 = 2
f, 2x² + 7x + 3 = 0
Tìm x
2x(8x-1)2(4x-1)=9
Tìm x biết
1,(2x+5)(2x-7)-(-4x-3)^2=16
2,(8x-3)(3x+2)-(4x+7)(x+4)=(2x+1)-(5x-1)
Tìm x biết
a) (x+2).(x+3) - (x-2).(x+5)=10
b) (3x+2). (2x+9) - (x+2). (8x+11)=(x+1).(3-2x)
c) 3.(2x-1).(3x-1)-(2x-3).(9x-1)=0
d) (5x-8).(4x-5)-(3x-4).(2x+12)=12
Tìm x biết 2(x+3)-x^2-3x=0
x^3+27+(x+3)(x-9)=0
4x^2-25-(2x-5)(2x+7)=0
8x^3-50x=0
(2x-1)^2-25=0
\(P=\frac{2x^5-x^4-2x+1}{4x^2-1}+\frac{8x^2-4x+2}{8x^3+1}\)
Mik đã rút gọn đi thành\(\frac{x^4+1}{2x+1}\)các bạn giúp mik tìm x biết P= 6 nhé
tìm x:
b.(2x+1)(16x^4-8x^3+4x^2-2x+1)-(2x-1)(16x^4+8x^3+4x^2+2x+1)=2