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sqell
@sqell
August 2021
1
4
Report
Упростить:
а) (√8 - 3) (3 + 2
√2);
б) (
√50 +4√2)
√2;
в) (5√3 + √27) :
√3
г) (
√3 - 1)^2 + (
√3 +1)^2;
Заранее спасибо за ответ.
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Answers & Comments
iriska124
А)(√8-3)*(3+2√2)=3√8-9+2√8*√2-6√2=3√8-6√2+2√16-9=3√2*4 -6√2 +2√4*4-9=
=6√2-6√2+4√4-9=4*2-9=8-9=-1
б)(√50+4√2)*√2=√50*√2+4√2*√2=(√50*2)+4*2=(√100)+8=10+8=18
в)(5√3+√27)\√3=5√3\√3 +√27\√3=5+√(27\3)=5+√9=5+3=8
г) (√3-1)²+(√3+1)²=(√3)²-2√3+1+(√3)²+2√3+1=3+2+3=8
1 votes
Thanks 4
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Answers & Comments
=6√2-6√2+4√4-9=4*2-9=8-9=-1
б)(√50+4√2)*√2=√50*√2+4√2*√2=(√50*2)+4*2=(√100)+8=10+8=18
в)(5√3+√27)\√3=5√3\√3 +√27\√3=5+√(27\3)=5+√9=5+3=8
г) (√3-1)²+(√3+1)²=(√3)²-2√3+1+(√3)²+2√3+1=3+2+3=8