Question

X²=9; x=3 або x = -3

Answer 1

Ответ:

Объяснение:

х²-9=0

(х-3)*(х+3) =0 произведение равно нулю, если хотя бы один из множителей равен нулю

х-3=0 или х+3=0

х=3 или х=-3

Answer 2

That's correct! The equation x² = 9 has two solutions, which are x = 3 and x = -3. When you plug these values into the equation, they both satisfy the equation:

For x = 3: 3² = 9 9 = 9 (True)

For x = -3: (-3)² = 9 9 = 9 (True)

So, both x = 3 and x = -3 are valid solutions to the equation x² = 9.