Bài 1:
a.\(\sqrt{x^2-2x+2}+\sqrt{3x^2-6x+4}=2\)
b. \(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=-x^2-2x+5\)
Bài 2: Tìm x \(\varepsilon\)Z sao cho :
\(\sqrt{x^2+x+3}\) có giá trị nguyên
. Dạ mấy ac giúp dùm e bài này nha ^^ E cảm ơn nhiều lắm ạ
\(\sqrt{3x^2+6x+7}\) +\(\sqrt{5x^2+10x+14}\)=4-2x-\(x^2\)
2x^2+3x+\(\sqrt{2x^2+3x+9}\)=33
MN giúp e vs
gpt:\(\sqrt{3x^2+6x+4}+\sqrt{2x^2+4x+11}=\left(1-x\right)\left(x+3\right)\)
\(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=5-x^2-2x\)
\(\sqrt{x^2-x+2}+\sqrt{x^2-3x+6}=2x\)
\(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=5-2x-x^2\)
\(\left(5\right)\sqrt{x+3-4\sqrt{x-1}}\sqrt{x+8+6\sqrt{x-1}}=5\)
\(\left(6\right)2x^2+3x+\sqrt{2x^2+3x+9}=33\)
\(\left(7\right)\sqrt{3x^2+6x+12}+\sqrt{5x^4-10x^2+30}=8\)
\(\left(8\right)x+y+z+8=2\sqrt{x-1}+4\sqrt{y-2}+6\sqrt{z-3}\)
GPT: \(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=5-2x-x^2\)
giải phương trình
\(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=5-2x-x^2\)
\(\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+21}=-x^2-2x+5\)
Tìm x
\(a,\sqrt{3x^2+6x+7}+\sqrt{5x^2+10x+14}=4-2x-x^2\)
\(b,\sqrt{x-2}+\sqrt{4-x}=x^2-6x+11\)
Giải phương trình