1)X^2-13x=0 2)x^2+144=0 3)x^2+64=0 4)16-x^2=0 5)7x^2+10x+3=0. Created by dianka7778lalal. algebra-ru

1)X^2-13x=0 2)x^2+144=0 3)x^2+64=0 4)16-x^2=0 5)7x^2+10x+3=0...

dianka7778lalal @dianka7778lalal

July 2022 1 4 Report

1)X^2-13x=0
2)x^2+144=0
3)x^2+64=0
4)16-x^2=0
5)7x^2+10x+3=0

Answers & Comments

m11m

Verified answer

1) x² - 13x=0
x(x-13)=0
x=0 x-13=0
x=13
Ответ: 0; 13.

2) x²+144=0
x²= -144
нет решений
Ответ: ∅

3) x² +64=0
x² = -64
нет решений.
Ответ: ∅.

4) 16-x²=0
-x² =-16
x² = 16
x₁=4
x₂= -4
Ответ: -4; 4.

5) 7x² +10x+3=0
D=10² - 4*7*3=100 - 84=16=4²
x₁=(-10-4)/(7*2)= -14/14= -1
x₂=(-10+4)/14= -6/14= -3/7
Ответ: -1; -3/7.

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Answer

Answers & Comments

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x 20 pomogite

1)-7x^2+52x-85=0 2)x^2+x-12=0 3)-x^2+2x+24=0 4)x^2-12x+36=0...

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