\(\left(x+2\right)^2+\left(x-1\right)\left(x+3\right)=2\left(x-4\right)\left(x+4\right)-3\)
\(\Leftrightarrow\left(x+2\right)^2+\left(x-1\right)\left(x+3\right)=2\left(x^2-16\right)-3\)
\(\Leftrightarrow x^2+4x+4+x^2+2x-3=2x^2-32-3\)
\(\Leftrightarrow x^2+4x+x^2+2x-2x^2=-32-3+3-4\)
\(\Leftrightarrow6x=-36\)
\(\Leftrightarrow x=-6\)
Vậy nghiệm của phương trình là \(x=-6\)
giúp mk chiều rùi
bài 1
a,\(\left(x-4\right)^2-25=0\)
b,\(\left(x-3\right)^2-\left(x+1\right)^2=0\)
c,\(\left(x^2-4\right)\left(21+3\right)=\left(x^2-4\right)\left(x-1\right)\)
d,\(\left(3x-7\right)^2-4\left(x+1\right)^2=0\)
Giái phương trình:
a, \(\left(x^2+x+1\right)\left(6-2x\right)=0\)
b,\(\left(x-1\right)^2-1+x^2=\left(1-x\right)\left(x+3\right)\)
c,\(\left(x^2-1\right)\left(x+2\right)\left(x-3\right)=\left(x-1\right)\left(x^2-4\right)\left(x+5\right)\)
giải phương trình
\(-6\left(-x^2-x+1\right)^4+x^2\left(-x^2-x+1\right)^2+5x^4=0\)
b) \(x^4+9=5x\left(x^2-3\right)\)
c) \(x^4+\left(x+1\right)\left(5x^2-6x-6\right)=0\)
d)\(\left(x^2+1\right)^2+\left(x+1\right)\left(3x^2+2x-2\right)=0\)
e) \(x^2\left(x-1\right)^2+x\left(x^2-1\right)=2\left(x+1\right)^2\)
1,Giải PT sau
a,\(\frac{4}{5}x-3=\frac{1}{5}x\left(4x-15\right)\)
b,(x-3)-\(\frac{\left(x-3\right)\left(2x-5\right)}{6}=\frac{\left(x-3\right)\left(3-x\right)}{4}\)
c,\(\frac{\left(3x+1\right)\left(3x-2\right)}{3}+5\left(3x+1\right)=\) \(\frac{2\left(2x+1\right)\left(3x+1\right)}{3}+2x\left(3x+1\right)\)
Giải các phương trình sau :
a) \(\left(x-1\right)\left(5x+3\right)=\left(3x-8\right)\left(x-1\right)\)
b) \(3x\left(25x+15\right)-35\left(5x+3\right)=0\)
c) \(\left(2-3x\right)\left(x+11\right)=\left(3x-2\right)\left(2-5x\right)\)
d) \(\left(2x^2+1\right)\left(4x-3\right)=\left(2x^2+1\right)\left(x-12\right)\)
e) \(\left(2x-1\right)^2+\left(2-x\right)\left(2x-1\right)=0\)
f) \(\left(x+2\right)\left(3-4x\right)=x^2+4x+4\)
Giải các phương trình sau:
a) \(\left(x^2-4\right)\left(2x+3\right)=\left(x^2-4\right)\left(x-1\right)\)
b) \(\left(3x-7\right)^2-4\left(x+1\right)^2=0\)
Các bạn làm giúp mình bài này . Mình gấp lắm !
Giải phương trình :
\(\dfrac{1}{x\left(x-1\right)}+\dfrac{1}{\left(x-1\right)\left(x-2\right)}+\dfrac{1}{\left(x-2\right)\left(x-3\right)}+\dfrac{1}{\left(x-3\right)\left(x-4\right)}=\dfrac{1}{x-4}+2\)
Giải phương trình:
a) \(x^2-\left(x+3\right)\left(3x+1\right)=9\).
b) \(x^3+4x+5=0\).
c) \(\left(x+14\right)^3-\left(x+12\right)^3=1352\).
d) \(x^3+\left(x-3\right)^3=\left(2x-3\right)^3\).
e) \(x\left(x+1\right)\left(x+2\right)\left(x+3\right)=360\).
f) \(x^3+\left(x-2\right)\left(2x+1\right)=8\).
\(1,\) \(\left(x+1\right)^2=4\left(x^2-2x+1\right)^2\)
\(2,\)\(\left(x^2-9\right)^2-9\left(x-3\right)^2=0\)
\(3,\) \(9\left(x-3\right)^2=4\left(x+2\right)^2\)
