при x = - 2 , y = - 5 .Examples. x+y+z=25,\:5x+3y+2z=0,\:y-z=6.Популярные задачи. Алгебра. График x-2y=5.
x+2y=2x-5, x-y=3 - System of Equations Calculator - Symbolab
2*x. - умножение.If x+y=5, then x=5-y(hope u can solve for x). This means that we can use 5-y in place of x in the second equation to find y. So (xy=6) now becomes (5-y)y = 6. Now expand the left side to get 5y-y^2=6. (y^2 means y squared). What you have here are two equations: [math]x+y=5[/math] [1].{X+2y=5 {X/4+(y+6)/3=3|*12 {X+2y=5 {3x+4y+24=36 {X+2y=5|*3 {3x+4y=12 -{3x+6y=15 -{3x+4y=12 2y=3|:2 y=1,5 x+1,5*2=5 x=5-3 x=2.
График x-2y=5 | Mathway
(y*3-2y)*2-y*2(y+5)(y-3)+2y(2y*2+5).
Здравствуйте, Гражина!
Решим предложенное Вами выражение следующим образом:
Подставим известные значения х и у в имеющееся выражение:
6*(-2) - 8*|-5 - 2| =
6*(-2) = -12|-5 - 2| = |-7| = 7 (модуль любого числа равен положительному числу)8*7 = 56-12 - 56 = -(12 + 56) = -68Ответ: -68
Надеюсь, ответ Вам поможет! Удачи и успехов в учебной деятельности!
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