The answer is (-1,3) and (-2,6)
(-2q^4/7)^4
<span><span><span><span> = (<span><span><span><span>−2/</span>7</span></span><span>q^4</span></span>)</span>* <span>(<span><span><span><span>−2/</span>7</span></span><span>q^4</span></span>)</span></span>* <span>(<span><span><span><span>−2/</span>7</span></span><span>q^4</span></span>)</span></span>* <span>(<span><span><span><span>−2/</span>7</span></span><span>q^4</span></span>)</span></span><span>
<span><span> <span> </span></span><span><span>
</span></span></span></span>= _16__ q^16
2401
V= wlh so the answer is 56.25 or 56 1/4