</span></span></span><span><span><span><span>x^2</span>−19</span>−<span>x^2</span></span>=<span><span><span>x^2</span>−<span>4x</span></span>−<span>x^2</span></span></span><span>(Subtract x^2 from both sides)
</span><span><span>−19</span>=<span>−<span>4x</span></span></span> <span><span>−<span>4x</span></span>=<span>−19</span></span><span>(Flip the equation)
</span><span><span><span>−<span>4x</span></span><span>/−4</span></span>=<span><span>−19</span><span>/−4 </span></span></span>(Divide both sides by -4)<span>Answer. x=<span>19/4 </span></span><span>Check answers. (Plug them in to make sure they work.)</span>
