\(\frac{3}{2+\sqrt{-x^2+2x+7}}\)=\(\frac{3}{2+\sqrt{8-\left(x-1\right)^2}}\)\(\le\)\(\frac{3}{2+\sqrt{8}}\)
dấu bằng khi x=1
tim gia tri nho nhat cua P=\(\frac{x+3\sqrt{x}+2}{x}\)
cho m = \(\frac{-3}{\sqrt{x}+3}\) tim gia tri nho nhat cua m
tim gia tri nho nhat cua \(\frac{356+4x^4+16x^3+56x^2+80x}{x^2+2x+5}\)
gia tri nho nhat cua bieu thuc \(\sqrt{x-1}+\sqrt{2x^2-5x+7}\)
Tim gia tri lon nhat va gia tri nho nhat cua bieu thuc sau: A=\(\frac{x+1}{x^2+x+1}\)
tim gia tri nho nhat cua biểu thức sao:
P= x-2\(\sqrt{x-2}\)+3
tim gia tri nho nhat cua \(\frac{4x+1}{x^2+3}\)
a\Rut gon bieu thuc
b/Tim gia tri nho nhat cua 4A
A=\(\frac{5\sqrt{x}+4}{x+\sqrt{x}-2}+\frac{\sqrt{x}-1}{\sqrt{x}+2}-\)\(\frac{\sqrt{x}+2}{\sqrt{x}-1}\)
Tim gia tri nho nhat va lon nhat cua bieu thuc sau: \(p=\frac{4x+3}{x^2+1}\)