## Intermediate Algebra (6th Edition)

$b=0$ and $c=-4$
Given $ax^{2}+bx+c=0$ and $7x^{2}-4=0$, we can rewrite the equation from the problem as $7x^{2}+0x+(-4)=0$. Therefore, $a=7$, $b=0$, and $c=-4$.