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simplify 7 squareroot of 63 minus 4 squareroot of 112
Sagot :
AnneCviz
AnneCviz
9 x 7 = 63 ; 16 x 7 = 112
7√63 - 4√112
= 7√(3² · 7) - 4√(4² · 7)
= 7·3 √7 - 4·4 √7
=21√7 - 16√7
=
5√7
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