Question

3x²+27=0 и также только не с + а с - ​

Answer 1

Відповідь:

Пояснення:

Фото

Answer 2

3х²+27=0; 3х²=-27; корней нет.

3х²-27=0; 3х²=27; х²=9; х=+-3.

Answer 3

To solve the quadratic equation $3x^2 + 27 = 0$ for $x$ using the subtraction operation (-), we'll first isolate $x^2$ and then solve for $x$:

Starting with the given equation: $3x^2 + 27 = 0$

First, subtract 27 from both sides to isolate the quadratic term: $3x^2 = -27$

Now, divide both sides by 3 to isolate $x^2$: $x^2 = -9$

Next, take the square root of both sides, remembering that there are two possible solutions (positive and negative square roots): $x = \pm \sqrt{-9}$

Since the square root of a negative number is imaginary, we can express it using the imaginary unit $i$: $x = \pm 3i$