thuc hien phep tinh a)6^2:4 x 3+2x5^2 b)5x4^2 -18:3^2
thuc hien phep tinh:
a, 5+(-2)+(18-23)+2
b, |-6|:(-3)-43+(-2)².11
a) 5+(-2)+(18-23)+2
=5+(18-23)+[(-2)+2]
=5+ (-5) + 0
= 0
b)|-6|:(-3)-43+(-2)2.11
=6:(-3)-43+4.11
= -2 -43+ 44
= -45 + 44
= -1
a,thuc hien phep tinh: 5*(2^2*3^2)^9*(2^2)^6-2*(2^2*3)^14*3^4/5*2^28*3^18-7*2^29*3^18
b,tim cac so nguyen n sao cho: n^2+5*n+9 la boi cua n+3
c,tim x,y nguyen sao cho: xy+2*x+y+11=0
Thuc hien phep tinh :
\(\frac{15^3+5.15^2-5^3}{18^3+6.18^2-6^3}\)
15^3+5.15^2-5^3 / 18^3+6.18^2-6^3
=3375+5.225-125 /5832+6.324-216
=3375+1125-125 /5832+1944-216
=4500-125 /7826-216
=4375 /7610
=875 /1522
mk ko bt viết phần nên viết phần bằng dấu gạch / nhé.mk cx ko bt đúng hay sai đâu nhé
5 . (262 . 3^2) . (2^2)^6 - 2 . (2^2 . 3)^14 . 3^4
5.2^28 . 3^18 - 7 . 2^29 . 3^18
Thuc hien phep tinh tren!
Mau mau kiem tick nao!!!!
^.^ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
thừa hơi bít cũng ko làm dễ ợt
liếc mắt chắng
cậu định cho mk cận hơn ak
thuc hien phep tinh :
a, (x+1)(1+x-x^2+x^3-x^4)-(x-1)(1+x+x^2+x^3+x^4)
b, (2b^2-2-5b+6b^3)(3+3b^2-b)
thuc hien phep tinh :
a, (x+1)(1+x-x^2+x^3-x^4)-(x-1)(1+x+x^2+x^3+x^4)
b, (2b^2-2-5b+6b^3)(3+3b^2-b)
Thuc hien phep tinh:
a/ \(\dfrac{2^4.6^7}{9^3.4^6}\)
b/ \(\dfrac{3^{18}.24^4}{9^4.81^5}\)
\(a,\dfrac{2^4.6^7}{9^3.4^6}=\dfrac{2^4.\left(2.3\right)^7}{\left(3^2\right)^3.\left(2^2\right)^6}=\dfrac{2^4.2^7.3^7}{3^6.2^{12}}=\dfrac{2^{11}.3^7}{3^6.2^{12}}=\dfrac{3}{2}\)
\(b,\dfrac{3^{18}.24^4}{9^4.81^5}=\dfrac{3^{18}.\left(3.2^3\right)^4}{\left(3^2\right)^4.\left(3^4\right)^5}=\dfrac{3^{18}.3^4.2^{12}}{3^8.3^{20}}=\dfrac{3^{22}.2^{12}}{3^{28}}=\dfrac{2^{12}}{3^8}\)
Thuc hien phep tinh;
a. \(\frac{2^4.6^7}{9^3.4^6}\)
b. \(\frac{3^{18}.24^4}{9^4.81^5}\)
thuc hien phep tinh
a)(-3/7)^21 : (9/49)^6
b)3-(-67)^0+(1/2)^2 :2