Mathematics: If x + y = 12 and x - y = 3, thenx2 - y2 =

If x + y = 12 and x - y = 3, thenx2 - y2 = - id123221059131, lezileechavez123

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yddlex

13.03.2022

Mathematics

$x^2-y^2=(x-y)(x+y)\\\\x^2-y^2=3\cdot12=36$

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Ответ:

serenityarts123

06.06.2020

Mathematics

There are 375 star stickers and 125 heart stickers.

There are 500 stickers with 20 stickers per sheet; 500/20 = 25 sheets of stickers.

25% of each sheet is hearts; 25/100(20) = 5 heart stickers per sheet. 5(25) = 125 total heart stickers.

20 stickers per sheet - 5 heart stickers per sheet = 15 star stickers per sheet. 15(25) = 375 total star stickers.

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If x + y = 12 and x - y = 3, then
x2 - y2 =

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