ĐKXĐ: x>=-1/2
\(2\sqrt{32x+16}-3\sqrt{18x+9}=\sqrt{8x+4}-6\)
=>\(2\cdot4\sqrt{2x+1}-3\cdot3\sqrt{2x+1}-2\sqrt{2x+1}=-6\)
=>\(8\sqrt{2x+1}-9\sqrt{2x+1}-2\sqrt{2x+1}=-6\)
=>\(-3\sqrt{2x+1}=-6\)
=>\(\sqrt{2x+1}=2\)
=>2x+1=4
=>2x=3
=>\(x=\dfrac{3}{2}\left(nhận\right)\)
tìm x:
\sqrt(8x-4)-2\sqrt(18x-9)+2\sqrt(32x-16)=12
giải các phương trình sau:
\(1,\sqrt{18x}-6\sqrt{\dfrac{2x}{9}}=3-\sqrt{\dfrac{x}{2}}\)
\(2,\sqrt{3x}-2\sqrt{12x}+\dfrac{1}{3}\sqrt{27x}=-4\)
3, \(3\sqrt{2x}+5\sqrt{8x}-20-\sqrt{18}=0\)
\(4,\sqrt{16x+16}-\sqrt{9x+9}=1\)
\(5,\sqrt{4\left(1-3x\right)}+\sqrt{9\left(1-3x\right)}=10\)
\(6,\dfrac{2}{3}\sqrt{x-3}+\dfrac{1}{6}\sqrt{x-3}-\sqrt{x-3}=\dfrac{-2}{3}\)
tìm x biết
\(\sqrt{16-32x}-\sqrt{12x}=\sqrt{3x}+\sqrt{9-18x}\)
giải phương trình
a)\(\sqrt{x-1}+\sqrt{4x-4}-\sqrt{25x-25}+2=0\)
b)\(\sqrt{16x+16}-\sqrt{9x+9}+\sqrt{4x+4}+\sqrt{x+1}=16\)
c)\(\sqrt{4x+20}+\sqrt{x+5}-\dfrac{1}{3}\sqrt{9x+45}=4\)
d)\(\dfrac{1}{3}\sqrt{2x}-\sqrt{8x}+\sqrt{18x}-10=2\)
Gpt:
\(3\sqrt{2}-5\sqrt{8x}+\sqrt{18x}=28\)
\(\sqrt{16x+16}-\sqrt{9x+9}+\sqrt{4x+4}=16\sqrt{x+1}\)
Tìm x khi \(\sqrt{16-32x}-\sqrt{12x}=\sqrt{3x}+\sqrt{9-18x}\)
Tìm x khi \(\sqrt{16-32x}-\sqrt{12x}=\sqrt{3x}+\sqrt{9-18x}\)
Giải phương trình:
\(\sqrt{18x-27}-\sqrt{32x-48}=1-\sqrt{8x-12}\)
3) tìm x biết
a) \(\sqrt{x+9}=7\)
b) \(4\sqrt{2x+3}-\sqrt{8x+12}+\dfrac{1}{3}\sqrt{18x+27}=15\)
c) \(\sqrt{x^2-6x+9}=2x+1\)
d) \(\sqrt{x+3+4\sqrt{x-1}}-\sqrt{x+8+6\sqrt{x-1}}=9\)
lm nhanh giúp mk nhé mk đang cần gấp
