1 ) tính
a)\(-\sqrt{\left(-3\right)^2}\)
b)\(-\sqrt{\left(-2\right)^4}\)
c)\(-\sqrt{5^2}\)
d)\(\sqrt{\left(-3\right)^6}\)
e)\(-\sqrt{\left(-1\right)^8}\)
2 tính
a) Với x<0 ,ta có
\(-\sqrt{x^2}\)
b)Vs y>0 ,ta có
\(-\sqrt{\left(-y\right)^2}\)
c) Vs a\(\le0\) ta có
\(-\sqrt{\left(-a\right)^4}\)
d) Vs b\(\le0\) ta có
\(-\sqrt{\left(-b\right)^{10}}\)
Bài 1:
a: \(-\sqrt{\left(-3\right)^2}=-\left|-3\right|=-3\)
b: \(-\sqrt{\left(-2\right)^4}=-\left|\left(-2\right)^2\right|=-4\)
c: \(=-\sqrt{5^2}=-\left|5\right|=-5\)
d: \(=\sqrt{\left(-3\right)^6}=\sqrt{3^6}=\left|3^3\right|=27\)
e: \(-\sqrt{\left(-1\right)^8}=-\left|\left(-1\right)^4\right|=-1\)