Tính nhanh :
126^2 - 152 x 126 + 5776
tính nhanh : a. 1532 + 94 . 153 + 472
b. 1262 - 152 . 126 + 5776
c. ( 2+1)(22 + 1)(24 + 1 ) ....( 220 + 1 )+ 1
tính nhanh
a. 1532 + 94 . 153 + 472
b. 1262 - 152 . 126 + 5776
c. ( 2+1)(22 + 1)(24 + 1 ) ....( 220 + 1 )+ 1
Tính nhanh:
a) 153^2+99×153+47^2.
b) 126^2-152×126+5776.
c) 3^8×5^8-(15^4-1)×(15^4+1).
d) (2+1)×(2^2+1)×(2^4+1)...(2^32+1)+1
Ai giúp mình làm bài này với. Mình cảm ơn nhiều.
a) 153^2+99.153+47^2
= 153^2+2.47.153+47^2
= (153+47)^2
=200^2
=40000
b) 126^2-152.126+5776
= 126^2-2.76.126+76^2
= (126-76)^2
= 50^2
= 2500
c)3^8.5^8-(15^4-1).(15^4+1)
= 15^8-[(15^4)^2-1^2]
= 15^8-15^8+1
=1
d) (2+1).(2^2+1).(2^4+1)...(2^32+1)+1
= 1.(2+1).(2^2+1).(2^4+1)...(2^32+1)+1
= (2-1).(2+1).(2+1).(2^4+1)...(2^32+1)+1
= (2^2-1).(2^2+1).(2^4+1)...(2^32+1)+1
= (2^4-1).(2^4+1)...(2^32+1)+1
= (2^8-1)...(2^32+1)+1
= (2^32-1).(2^32+1)+1
= 2^64-1+1
= 2^64
TÍNH NHANH
A)\(153^2+94.153+47^2\)
B)\(126^2-152.126+5776\)
Giúp mik với đang cần gấp
Bài 5. Tính nhanh:
a) 153² + 94 .153 + 47²
b) 126² – 152.126 + 5776
c) 3⁸.5⁸ – (15⁴ – 1)(15⁴ + 1)
a)\(\left(153+47\right)^2\)
b)\(\left(126-76\right)^2\)
c)\(15^8-15^8+1=1\)
Bài 1: tính nhanh
A. 1352+94.153+472
B. 1262-152.126+5776
C. 38.58-(154-1)(154+1)
A: \(135^2+94\cdot153+47^2=135^2\cdot2\cdot47+153\cdot47\)
\(=47\left(36450+153\right)=36603\cdot47=1720341\)
B: \(126^2-152\cdot126+5776=126^2-2\cdot126\cdot76+76^2=\left(126-76\right)^2=50^2=2500\)
C: \(3^8\cdot5^8-\left(15^4-1\right)\left(15^4+1\right)=15^8-\left(15^8-1\right)=15^8-15^8+1=1\)
giup mk giải 3 câu này vs. Tính nhanh:
a) 1532 + 94 .153 + 472
b) 1262 – 152.126 + 5776
c) 38.58 – (154 – 1)(154 + 1)
Tính nhanh:
a)
153^2 + 94 * 153 + 47^2
= 153 * (153 + 94) + 47^2
= 153 * 247 + 47^2
= 153 * (200 + 47) + 47^2
= 153 * 200 + 153 * 47 + 47^2
= 153 * 200 + 47 * (153 + 47)
= 153 * 200 + 47 * 200
= 200 * (153 + 47)
= 200 * 200
= 40000
b)126^2 - 152.126 + 5776
= 126 . 126 - 152.126 +126. 2888/63
= 126 . ( 126 - 152 + 2888/63)
= 126 . 1250/63
= 2500
Câu c bn tự làm nha
a) \(153^2+94.153+47^2=153^2+2.47.153+47^2\)
\(=\left(153+47\right)^2=200^2=40000\)
b) \(126^2-152.126+5776=126^2-2.76.126+76^2\)
\(=\left(126-76\right)^2=50^2=2500\)
c) \(3^8.5^8-\left(15^4-1\right)\left(15^4+1\right)=15^8-\left[\left(15^4\right)^2-1\right]\)
\(=15^8-\left(15^8-1\right)=15^8-15^8+1=1\)
Tính nhanh
a) 126 x 4 + 126 x 5 + 126
b ) 184 x 100 - 50 x 100
a) 126 x 4 + 126 x 5 + 126
= 126 x 4 + 126 x 5 + 126 x 1
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
b) 184 x 100 - 50 x 100
= ( 184 - 50 ) x 100
= 134 x 100
= 13400
126 x 4 + 126 x 5 + 126
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
Tính
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