Question

-4x²(9+x)+3x(12x-1)=-4x³-9.​

Answer 1

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Answer 2

To solve the equation:

-4x²(9+x) + 3x(12x-1) = -4x³ - 9

Let's simplify each side of the equation step by step:

-4x²(9+x) can be expanded as -4x² * 9 - 4x² * x, which simplifies to -36x² - 4x³.

3x(12x-1) can be expanded as 3x * 12x - 3x * 1, which simplifies to 36x² - 3x.

Now, let's substitute these simplifications back into the original equation:

-36x² - 4x³ + 36x² - 3x = -4x³ - 9

The terms with x³ on both sides cancel out:

-4x³ + 4x³ - 3x = -9

Simplifying further:

-3x = -9

Finally, we solve for x by dividing both sides of the equation by -3:

x = -9 / -3

x = 3

Therefore, the solution to the equation is x = 3.