dla: x = -2 dla y = 6 dla z = 0,3 2 (3x - y) - 9 (x + 2y) + 7 (x - z)= Pliss pomóżcie
2 ( 3x - y ) - 9(x+2y) +7(x-z)
6 x - 2 y - 9x + 18y + 7x - 7z
4x + 16 y - 7z
4 * (-2) + 16 * 6 - 7 * 0,3
-8 + 96 - 2,1
85,9
mi tak wyszło, jeżeli mam błędy, to sorry.
2 (3x - y) - 9 (x + 2y) + 7 (x - z) =
= 2 [3 * (-2) - 6] - 9 * (-2 + 2 *6) + 7 (-2-0,3)
= 2 * (-6-6) - 9 * (-2+12) +7 * (-2,3)
= 2 * (-12) - 9*10 +16,1
= -24 - 90 + 16,1
-114 +16,1
= -97,9
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
2 ( 3x - y ) - 9(x+2y) +7(x-z)
6 x - 2 y - 9x + 18y + 7x - 7z
4x + 16 y - 7z
4 * (-2) + 16 * 6 - 7 * 0,3
-8 + 96 - 2,1
85,9
mi tak wyszło, jeżeli mam błędy, to sorry.
2 (3x - y) - 9 (x + 2y) + 7 (x - z) =
= 2 [3 * (-2) - 6] - 9 * (-2 + 2 *6) + 7 (-2-0,3)
= 2 * (-6-6) - 9 * (-2+12) +7 * (-2,3)
= 2 * (-12) - 9*10 +16,1
= -24 - 90 + 16,1
-114 +16,1
= -97,9