1. k có GTNN, chắc bài sai , thừa 10x

2. = a³+b³

Mk mak lm mấy cái con toán này

Thì mk sáng mai cx ko lm xng đôu

Bấm mẹ máy tính cho nó nhanh

K mk

\(a)\)\(\frac{10^{12}+5^{11}.2^9-5^{13}.2^8}{4.5^5.10^6}\)

\(=\)\(\frac{2^{12}.5^{12}+2^9.5^{11}-2^8.5^{13}}{2^8.5^{11}}\)

\(=\)\(\frac{2^8.5^{11}\left(2^4.5+2-5^2\right)}{2^8.5^{11}}\)

\(=\)\(2^4.5+2-5^2\)

\(=\)\(80+2-25\)

\(=\)\(57\)

Chúc bạn học tốt ~ 

\(\left(15^2-1\right)\left(15^2+1\right)-5^4.3^4\)

= \(\left[\left(15^2\right)^2-1\right]-15^4\)

= \(\left(15^4-1\right)-15^4\)

= \(15^4-1-15^4\)

= \(-1\)

ket qua la -1

Giúp vs @@Phạm Hoàng GiangTrần Quốc LộcTrần Thị Hươnghattori heijiTRẦN MINH HOÀNGAn Nguyễn BáRibi Nkok NgokKien Nguyen

Trần Đăng NhấtHung nguyen

Sửa đề bài 1 : Rút gọn

a,\(\left(2+1\right)\left(2^2+1\right)\left(2^4+1\right).........\left(2^{32}+1\right)-2^{64}\)

(5^2-1)(5^2+1)...(5^32+1)-5^64

=(5^4-1)....(5^32+1)-5^64

=(5^32-1)(5^32+1)-5^64

=5^64-1-5^64

=-1

\(24=5^2-1\\ \)

con lai tu giai nhe

\(B=24.\left(5^2+1\right)\left(5^4+1\right)......\left(5^{32}+1\right)-5^{64}\)

\(B=\left(5^2-1\right)\left(5^2+1\right)....\left(5^{32}+1\right)-5^{64}\)

\(B=\left(5^4-1\right).....\left(5^{32}+1\right)-5^{64}\)

\(B=\left(5^{32}-1\right)\left(5^{32}+1\right)-5^{64}\)

\(B=5^{64}-1-5^{64}\)

\(B=-1\)