Question

Given following equation is quadratic:
$(x+2{)}^3=x^3-4$

• A. True
• B. False

Answer 1

The correct option is A True

$(x+2{)}^3=x^3-4$

We know that,

$(a+b{)}^3=a^3+b^3+3ab(a+b)$

$x^3+8+6x(x+2)=x^3-4$

$6x^2+12x+12=0$

Since the given equation is in the form $a{x}^2+bx+c=0$ where, $a=6$,

$b=12$, $c=12$

The given equation is quadratic.