Предмет: Математика, автор: fyfuufu

-0,7x² + x = 0
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Ответы

Автор ответа: saychuknastya57
0

Відповідь:

−0.7x

2

+x=0

Розкладемо на множники:

(

0.7

+

1

)

=

0

x(−0.7x+1)=0

Отже, один із коренів рівняння

=

0

x=0.

Другий корінь визначимо, прирівнявши вираз

0.7

+

1

−0.7x+1 до нуля:

0.7

+

1

=

0

−0.7x+1=0

Розв'яжемо це рівняння для

x:

0.7

=

1

−0.7x=−1

=

1

0.7

x=

−0.7

−1

10

7

x≈

7

10

Отже, розв'язками рівняння

0.7

2

+

=

0

−0.7x

2

+x=0 є

=

0

x=0 та

10

7

x≈

7

10

.

Покрокове пояснення:


fyfuufu: Чо б#я#ь?
fyfuufu: Надо наити корень неполного квадратного уравнения
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