помогите плиииз срочно нужно. Created by swetlyiangel. algebra-ru

помогите плиииз срочно нужно...

swetlyiangel @swetlyiangel

August 2021 1 1 Report

помогите плиииз срочно нужно

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m11m

Verified answer

X=7+y

(7+y)² - (7+y)y -y² =19
49+14y+y² -7y-y² -y² -19=0
-y² +7y +30=0
y² -7y -30=0
D=(-7)² -4*(-30)=49+120=169=13²
y₁=(7-13)/2 = -3 x₁=7 -3=4 (4; -3)
y₂=(7+13)/2=10 y₂=7+10=17 (17; 10)

Ответ: (17; 10); (4; -3).

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swetlyiangel August 2022 | 0 Ответы

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