Question

√8x-7 = √4x+4
Чему равен x?

Answer 1

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8x-7=4x+4

8x-4x=4+7

4x=11

x=11/4=2,75

Answer 2

$\sqrt{8x - 7} = \sqrt{4x + 4} \\ 8x - 7 = 4x + 4 \\ 8x - 4x = 4 + 7 \\ 4x = 11 \\ x = \frac{11}{4} \\ x = 2.75$

Ответ: 2,75