x²+2x-80=015y²-22y-37=0решить уравнение. Created by moldirkenesova. algebra-ru

x²+2x-80=015y²-22y-37=0решить уравнение...

moldirkenesova @moldirkenesova

August 2022 1 5 Report

x²+2x-80=0
15y²-22y-37=0
решить уравнение

Answers & Comments

Bronzor1

Verified answer

1)
x^2+2x-80=0
D=(2)^2-4*1*(-80)=4+320=324
x1=(-2+sqrt(324))/2=8
x2=(-2-sqrt(324))/2=-10
2)
15y^2-22y-37=
D=484+60*37=2704
y1=(22+52)/30=37/15
y2=(22-52)/30=-1

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