45*48-90*24
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45*48-90*24+145
= 45*48 - 45*2 * 24 + 145
= 45 * 48 - 45 * 48 + 145
= 0 + 145 = 145
45 x 48 - 90 x 24 + 145
= 45 x 48 - 45 x 2 x 24 + 145
= 45x 48 - 45 x 48 + 145
= 0 + 145 = 145
~ Hok tốt ~
45 x 48 - 90 x 24 + 145
= 45 x 48 - 45 x 2 x 24 + 145
= 45 x 48 - 45 - 48 + 145
= 45 x ( 48 - 48 ) + 145
= 45 x 0 + 145
= 0 + 145
= 145
~ Hok tốt ~
123x456456+123123x456=56144088+56144088=112288176
45x48+90x24+145=2160+2160+145=4465
123 . 456456 + 123123 . 456
=123 . 456 . 1001 + 123 . 456 .1001
=123 . 456 . 1001 . 2
=56088 . 2002
=112288176
45 . 48 + 90 . 24 + 145
=45 . 2 . 24 + 90 . 24 + 145
=90 . (24+24) + 145
=90 . 48 + 145
=4320 + 145
=4465
chúc bạn học tốt nha
45x48-90x24+145=145
4320:9-8640:18+750=750
754x75-2262x25+4568=4568
a, BCNN(540;360) = 1080
b, BCNN(45;60) = 180
c, BCNN(36;180) = 180
d, BCNN(16;48;150) = 1200
e, BCNN(60;90;135) = 540
f, BCNN(24;72;280) = 2520
a, BCNN(540;360) = 1080
b, BCNN(45;60) = 180
c, BCNN(36;180) = 180
d, BCNN(16;48;150) = 1200
e, BCNN(60;90;135) = 540
f, BCNN(24;72;280) = 2520
(45*46+47*48)*(51*52-49*48)*(45*128-90*64)*(1995*1996+1997*1998) = 0
(45·46+47·48)·(51·52−49·48)·(45·128−90·64)·(1995·1996+1997·1998)
=(45·46+47·48)·(51·52−49·48)·(45·2·64−90·64)·(1995·1996+1997·1998)
=(45·46+47·48)·(51·52−49·48)·(90·64−90·64)·(1995·1996+1997·1998)
=(45·46+47·48)·(51·52−49·48)·0·(1995·1996+1997·1998)
=0
\(\left(45\cdot46+47\cdot48\right)\cdot\left(51\cdot52-49\cdot48\right)\cdot\left(45\cdot128-90\cdot64\right)\cdot\left(1995\cdot1996+1997\cdot1998\right)\)
\(=\left(45\cdot46+47\cdot48\right)\cdot\left(51\cdot52-49\cdot48\right)\cdot\left(45\cdot2\cdot64-90\cdot64\right)\cdot\left(1995\cdot1996+1997\cdot1998\right)\)
\(=\left(45\cdot46+47\cdot48\right)\cdot\left(51\cdot52-49\cdot48\right)\cdot\left(90\cdot64-90\cdot64\right)\cdot\left(1995\cdot1996+1997\cdot1998\right)\)
\(=\left(45\cdot46+47\cdot48\right)\cdot\left(51\cdot52-49\cdot48\right)\cdot0\cdot\left(1995\cdot1996+1997\cdot1998\right)\)
\(=0\)
=45*2*24-45*2*24
=0
45x48-90x24=2160-2160=0