\(3^6:3^2+2^3.2^2\)
\(3^{6-2}+2^{3+2}\)
\(3^4+2^5\)
\(81+32=113\)
3^6:3^2+2^3x2^2
=36-3+23+2
=33+25
=27+32
=59
S bang 2 mu 2 cong 4 mu 2 cong 6 mu 2 cong.......cong 20 mu 2
tim cac gia tri cua x de bieu thuc sau nhan gia tri am
a)x mu 2 + 5x b)x mu 2 - 5/2x c)3(2x+3)(3x-5) d)x - 2/x-6 e) x mu 2 -1/x mu 2
Cho tam giac ABC CMR neu ha=3,hb=4,hc=5 thi a mu 2 lon hon b mu 2 cong c mu 2
chứng minh: A=2+2 mu 2 + 2 mu 3+ ... + 2 mũ 2016
a) chia hết cho 3, 6
b) chia hết cho 7
8 mu 2 chia 2 mu 3
4*(-1/2) mu 3 -3*(-1/2) mu 2-3*(-1/2) mu 1
4*(-1/2) mu 3 -2*(-1/2) mu 2-3*(-1/2) mu 1
chung minh 1-1/2 mu 2 -1/ 3 mu 2 - 1/ 4 mu 2 - ... - 1/2015 mu 2 > 1/2015
9 * 3 mu 3 * 1 phan 81 * 3 mu 2
4.2mu5 / {2 mu 3. 1 phan 16 }
