Решите неравенство: 1)(x+5)(x-5)-(x+3)x ≤ x+1 2)(y+4)(4-y)+(y+5)y>6y-20;. Created by Kristino4kaMiy. algebra-ru

Решите неравенство: 1)(x+5)(x-5)-(x+3)x ≤ x+1 2)(y+4)(4-y)+(y+5)y>6y-20;...

Kristino4kaMiy @Kristino4kaMiy

August 2022 1 5 Report

Решите неравенство:
1)(x+5)(x-5)-(x+3)x ≤ x+1

2)(y+4)(4-y)+(y+5)y>6y-20;

Answers & Comments

sedinalana

Verified answer

1)(x+5)(x-5)-(x+3)x ≤ x+1
x²-25-x²-3x-x≤1
-4x≤1+25
-4x≤26
x≥-6,5
x∈[-6,5;∞)

2)(y+4)(4-y)+(y+5)y>6y-20
16-y²+y²+5y-6y>-20
-y>-20-16
-y>-36
y<36
y∈(-∞;36)

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