tờ phắc??? toán lớp 7???
Các câu hỏi tương tự
Tính
a) \(2\sqrt{\frac{25}{16}}-3\sqrt{\frac{49}{36}}+4\sqrt{\frac{81}{64}}\)
b) \(\left(3\sqrt{2}\right)^2-\left(4\sqrt{\frac{1}{2}}\right)^2+\frac{1}{16}.\left(\sqrt{\frac{3}{4}}\right)^2\)
c) \(\frac{2}{3}\sqrt{\frac{81}{16}}-\frac{3}{4}\sqrt{\frac{64}{9}}+\frac{7}{5}.\sqrt{\frac{25}{196}}\)
a) sqrt{9}+sqrt{4} b) sqrt{0,25}-sqrt{0,01} c) sqrt{frac{16}{25}}-sqrt{frac{1}{81}} d) 2-sqrt{0,36}2. a) sqrt{64}-sqrt{16}+sqrt{left(-3^2right)} b) sqrt{121}+sqrt{left(-5right)^2}-sqrt{9}c) sqrt{frac{9}{4}}-sqrt{frac{16}{36}}-sqrt{49} d) sqrt{left(-4right)^2}+sqrt{left(-5right)^2}-sqrt{left(-6right)^2}
Đọc tiếp
a) \(\sqrt{9}+\sqrt{4}\) b) \(\sqrt{0,25}-\sqrt{0,01}\) c) \(\sqrt{\frac{16}{25}}-\sqrt{\frac{1}{81}}\) d) \(2-\sqrt{0,36}\)
2. a) \(\sqrt{64}-\sqrt{16}+\sqrt{\left(-3^2\right)}\) b) \(\sqrt{121}+\sqrt{\left(-5\right)^2}-\sqrt{9}\)
c) \(\sqrt{\frac{9}{4}}-\sqrt{\frac{16}{36}}-\sqrt{49}\) d) \(\sqrt{\left(-4\right)^2}+\sqrt{\left(-5\right)^2}-\sqrt{\left(-6\right)^2}\)
Giúp mik với
Tính
a)\(\frac{2}{3}\sqrt{81}-\left(\frac{-3}{4}\right).\sqrt{\frac{9}{64}}+\left(\frac{\sqrt{2}}{3}\right)^2\)
b)\(\left(-\sqrt{\frac{5}{4}}\right)^2-\sqrt{\frac{9}{4}}:\left(-4,5\right)-\sqrt{\frac{25}{16}}.\sqrt{\frac{64}{9}}\)
c)\(-2^4-\left(-2\right)^2:\left(-\sqrt{\frac{16}{121}}\right)-\left(-\sqrt{\frac{2}{3}}\right)^2:\left(-2\frac{2}{3}\right)\)
a) 4.left(-dfrac{1}{2}right)^3-2.left(-dfrac{1}{2}right)^2+3.left(-dfrac{1}{2}right)+1
b) 8.sqrt{9}-sqrt{64}
c) sqrt{dfrac{9}{16}}+dfrac{25}{46}:dfrac{5}{23}-dfrac{7}{4}
đung cho 5 sao
Đọc tiếp
a) \(4.\left(-\dfrac{1}{2}\right)^3\)\(-2.\left(-\dfrac{1}{2}\right)^2\)+\(3.\left(-\dfrac{1}{2}\right)\)+1
b) \(8.\sqrt{9}\)\(-\sqrt{64}\)
c) \(\sqrt{\dfrac{9}{16}}\)\(+\dfrac{25}{46}\)\(:\dfrac{5}{23}\)\(-\dfrac{7}{4}\)
đung cho 5 sao
\(Tính:\)
\(a.\sqrt{25}-\sqrt{16}+\sqrt{1}\)
\(b.\sqrt{\frac{4}{9}}+\sqrt{\frac{25}{4}}+\sqrt{\left(-3\right)^4}\)
\(c.\frac{7}{5}+\sqrt{49}+\sqrt{\left(-3\right)^2}\)
\(\sqrt{\frac{25}{4}}+\left(\sqrt{\frac{1}{2}}\right)^2:\left(\frac{-\sqrt{9}}{4}\right).\sqrt{\frac{16}{81}}-4^2-\left(-2\right)^3\)
giúp mình với
1, tính
a, \(7\times\sqrt{\dfrac{6^2}{7^2}}-\sqrt{25}+\sqrt{\dfrac{\left(-3\right)^2}{2}}\)
b, \(-\sqrt{\dfrac{64}{49}}-\dfrac{3}{5}\times\sqrt{\dfrac{25}{64}}+\sqrt{0,25}\)
c, \(\sqrt{\dfrac{10000}{5}}-\dfrac{1}{4}.\sqrt{\dfrac{16}{9}}+\sqrt{\dfrac{\left(-3\right)^2}{\left(4\right)}}\)
d, \(\left|\dfrac{1}{4}-\sqrt{0,0144}\right|-\dfrac{3}{2}+\sqrt{\dfrac{81}{169}}\)
\(\left[-\sqrt{2,25}+4\sqrt{\left(-2,15\right)^2}-\left(3\sqrt{\dfrac{7}{6}}\right)^2\right]\sqrt{1\dfrac{9}{16}}\)
1)tính kết quả:
a, A=\(2\times\sqrt{a}-3\times\sqrt{16}+5\times\sqrt{31}\)
b, B=\(\left(\sqrt{\frac{1}{16}}+\sqrt{\frac{4}{25}}\right)\div\sqrt{\frac{25}{36}}\)
c, \(\left(\sqrt{5}\right)^2-\left(2\times\sqrt{3}\right)^2+\left(4\times\sqrt{2}\right)^2\)