Multiple choice

Choose the best possible option. $\displaystyle (x+5)(x-8)=0$ is quadratic equation.

  1. Yes

  2. No

  3. Complex equation

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Expanding (x+5)(x-8) = x^2 - 3x - 40 = 0. This is a polynomial of degree 2, which is the definition of a quadratic equation.

AI explanation

When we expand the expression (x+5)(x-8), we get x^2 - 8x + 5x - 40, which simplifies to x^2 - 3x - 40 = 0. Because this expanded equation is a polynomial with the highest degree of two, it satisfies the definition of a quadratic equation. Therefore, the statement is true.

Keep practicing — related questions