\(\left(x+4\right)^2-\left(x+1\right)\left(x+1\right)=16.\)
\(\Leftrightarrow x^2+8x+16-x^2-2x-1=16.\)
\(\Leftrightarrow6x+15=16.\Leftrightarrow x=\dfrac{1}{6}.\)
\(\left(x+4\right)^2-\left(x+1\right)\left(x+1\right)=16.\)
\(\Leftrightarrow x^2+8x+16-x^2-2x-1=16.\)
\(\Leftrightarrow6x+15=16.\Leftrightarrow x=\dfrac{1}{6}.\)
a)-1/3x+24
b)2x/x^2-16
Tìm các giá trị của x để các phân thức sau có nghĩa:trình bày ra luôn
a,x+5/x-1+8/x^2-4x+3=x+1/x-3 b,x-4/x-1-x^2+3/1-x^2+5/x+1=0 c,3x/4-5=3-x/2+5x-1/6 d,(x-2)(x+2)-(x-3)(x+4)-2x+3=0 e,(x-1)^2+2(x+1)=5x+5 g,(x-3)(x+4)x=0
1) (3x-2)/3-2=(4x+1)/42) (x-3)/4+(2x-1)/3=(2-x)/63) 1/2 (x+1)+1/4 (x+3)=3-1/3 (x+2)4) (x+4)/5-x+4=x/3-(x-2)/25) (4-5x)/6=2(-x+1)/2 6) (-(x-3))/2-2=5(x+2)/4 7)2(2x+1)/5-(6+x)/3=(5-4x)/158) (7-3x)/2-(5+x)/5=1 9)(x-1)/2+3(x+1)/8=(11-5x)/310)(3+5x)/5-3=(9x-3)/4
8(x+ 1/x)^2 +4(x^2 + 1/x^2) -4(x^2+ 1/x^2)(x+ 1/x)^2 = (x+4)^2
8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2
8(x + 1/x)^2 +4(x^2 + 1/x^2)^2 -4(x^2 + 1/x^2)(x + 1/x)^2=(x + 4)^2
Giải phương trình:
a)(x+1/x-2)^2+x+1/x-4-3(2x-4/x-4)^2=0
b)4/x^2(x+1)^2-4(1/x-1/x+1)+1=0
Tìm x, biết :
a) (x-2)3 +6(x+1)2-x3+12=0
b) (x-5) (x+5) - (x+3)2+3(x-2)2=(x+1)2- (x+4)(x-4)+3x2
c) (2x+3)2 +(x-1)(x+1)=5(x+2)2-(x-5)(x+1)+(x+4)
d) (1-3x)2-(x-2)(9x+1)=(3x-4)(3x+4)-9(x+3)2
Giúp mk với ạ, mk cảm ơn !
giải phương trình8(x+1/x)^2+4(x^2+1/x^2)^2-4(x^2+1/x^2)(x+1/x)^2=(x+4)^2