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sashkapuss
@sashkapuss
July 2022
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Помогите решить, пожалуйста!
1. (x-8)^2=(6-x)^2
2. Упростите выражение:
(4-y)^2-y(y+1)
3. Решите неравенство:
2x-8≤4x+6
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DariosI
Verified answer
1. (x-8)^2=(6-x)^2
х²-16х+64=36-12х+х²
16х-12х=64-36
4х=28
х=7
2. Упростите выражение:
(4-y)^2-y(y+1)=16-8у+у
²-(у²+у)=16-8у-у=16-9у
3. Решите неравенство:
2x-8≤4x+6
4х-2х
≥-8-6
2х≥-14
х≥-7
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Answers & Comments
Verified answer
1. (x-8)^2=(6-x)^2х²-16х+64=36-12х+х²
16х-12х=64-36
4х=28
х=7
2. Упростите выражение:
(4-y)^2-y(y+1)=16-8у+у²-(у²+у)=16-8у-у=16-9у
3. Решите неравенство:
2x-8≤4x+6
4х-2х≥-8-6
2х≥-14
х≥-7