If x= -1/x =3 i> x²+1/x² ii> x4+1/x⁴. solve it by squaring method
Answers
DOCTYPE html>
<html>
<body>
<div class="content">
<div class="content__container">
<p class="content__container__text">
Hello
</p>
<ul class="content__container__list">
<li class="content__container__list__item">world !</li>
<li class="content__container__list__item">bob !</li>
<li class="content__container__list__item">users !</li>
<li class="content__container__list__item">everybody !</li>
</ul>
</div>
</div>
<style>
body {
width: 100%;
height: 100%;
position: fixed;
background-color: #34495e;
}
.content {
position: absolute;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
height: 160px;
overflow: hidden;
font-family: 'Lato', sans-serif;
font-size: 35px;
line-height: 40px;
color: #ecf0f1;
}
.content__container {
font-weight: 600;
overflow: hidden;
height: 40px;
padding: 0 40px;
}
.content__container:before {
content: '[';
left: 0;
}
.content__container:after {
content: ']';
position: absolute;
right: 0;
}
.content__container:after,
.content__container:before {
position: absolute;
top: 0;
color: #16a085;
font-size: 42px;
line-height: 40px;
-webkit-animation-name: opacity;
-webkit-animation-duration: 2s;
-webkit-animation-iteration-count: infinite;
animation-name: opacity;
animation-duration: 2s;
animation-iteration-count: infinite;
}
.content__container__text {
display: inline;
float: left;
margin: 0;
}
.content__container__list {
margin-top: 0;
padding-left: 110px;
text-align: left;
list-style: none;
-webkit-animation-name: change;
-webkit-animation-duration: 10s;
-webkit-animation-iteration-count: infinite;
animation-name: change;
animation-duration: 10s;
animation-iteration-count: infinite;
}
.content__container__list__item {
line-height: 40px;
margin: 0;
}
@-webkit-keyframes opacity {
0%,
100% {
opacity: 0;
}
50% {
opacity: 1;
}
}
@-webkit-keyframes change {
0%,
12.66%,
100% {
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
16.66%,
29.32% {
-webkit-transform: translate3d(0, -25%, 0);
transform: translate3d(0, -25%, 0);
}
33.32%,
45.98% {
-webkit-transform: translate3d(0, -50%, 0);
transform: translate3d(0, -50%, 0);
}
49.98%,
62.64% {
-webkit-transform: translate3d(0, -75%, 0);
transform: translate3d(0, -75%, 0);
}
66.64%,
79.3% {
-webkit-transform: translate3d(0, -50%, 0);
transform: translate3d(0, -50%, 0);
}
83.3%,
95.96% {
-webkit-transform: translate3d(0, -25%, 0);
transform: translate3d(0, -25%, 0);
}
}
@keyframes opacity {
0%,
100% {
opacity: 0;
}
50% {
opacity: 1;
}
}
@keyframes change {
0%,
12.66%,
100% {
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
16.66%,
29.32% {
-webkit-transform: translate3d(0, -25%, 0);
transform: translate3d(0, -25%, 0);
}
33.32%,
45.98% {
-webkit-transform: translate3d(0, -50%, 0);
transform: translate3d(0, -50%, 0);
}
49.98%,
62.64% {
-webkit-transform: translate3d(0, -75%, 0);
transform: translate3d(0, -75%, 0);
}
66.64%,
79.3% {
-webkit-transform: translate3d(0, -50%, 0);
transform: translate3d(0, -50%, 0);
}
83.3%,
95.96% {
-webkit-transform: translate3d(0, -25%, 0);
transform: translate3d(0, -25%, 0);
}
}
</style>
</body>
</html>