Question

Решите уравнение
1)
$2 { }^{ - 2} + 3 {}^{ - 1} x = 0.25$
2)
$2.25x = 5.125 - 4 {}^{ - 1} x$
3)
$3 {}^{ - 1} x + 3 {}^{ - 2} x = 9 {}^{ - 2} + x$
4)
$4 {}^{ - 1 } x - 2 {}^{ - 2} x = 8 {}^{2} + x$

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Answer 1

Ответ:

Объяснение:

2⁻²+3⁻¹x=0,25

2⁻²+3⁻¹x=1/4

3⁻¹x=2⁻²-2⁻²

x/3=0

x=0

2,25x=5,125-4⁻¹x

9/4 ·x=41/8 -1/4 ·x

9/4 ·x+ 1/4 ·x=41/8

10/4 ·x=41/8

x=41/8 ·4/10=41/20=2 1/20=2,05

4⁻¹x-2⁻²x=8²+x

(2²)⁻¹x-2⁻²x-x=64

2⁻²x-2⁻²x-x=64

0-x=64

x=-64