2x^2+x-10=0 4x^2-17x-15=0 x^2+3x=0 2x^2-32=0. Created by erdni08imeev. matematika-ru

2x^2+x-10=0 4x^2-17x-15=0 x^2+3x=0 2x^2-32=0...

July 2022 1 3 Report

2x^2+x-10=0
4x^2-17x-15=0
x^2+3x=0
2x^2-32=0

Answers & Comments

nikaveronika125 1) 2x^2+x-10 = 0
D= 1^2-4*2*(-10)=1+80=81
D>0, 2 корня
х1,2= (-1 +/- 9)/2*2
x1= (-1+9)/4=8/4=2
х2= (-1-9)/4=-10/4 =-2,5
Ответ: -2,5; 2

2) 4x^2-17x-15 =0
D= (-17)^2-4*4*(-15)=289+240= 529
x1,2= (17 +/- 23) / 4+2
x1= (17+ 23)/8= 40/8 = 5
x2= (17-23)/8= -6/8= - 3/4
Ответ: -3/4 ; 5

3) x^2+3x=0
x(x+3)=0
1. x=0
2. x+3=0
x=-3
Ответ: -3; 0

4) 2x^2-32=0
2x^2=32
x^2=32/2
x2=16
x= +/- 4
Ответ: -4; 4

razdel ekologii izuchayushij vzaimootnoshenie osobej organizmov s okruzhayushej sred

Answer

erdni08imeev July 2022 | 0 Ответы

v kakom slove pravopisanie suffiksa opredelyaetsya pravilom v prichastii pishets

Answer

erdni08imeev July 2022 | 0 Ответы

Answers & Comments

razdel ekologii izuchayushij vzaimootnoshenie osobej organizmov s okruzhayushej sred

v kakom slove pravopisanie suffiksa opredelyaetsya pravilom v prichastii pishets

x2 x 12 srochno nuzhno reshenie

v treugolnike abc izvestno chto ac36 bm mediananajdite am

najdite tangens ugla aobizobrazhyonnogo na risunke

2...

рекомендуемые вопросы

Helpful Links

Helpful Social