In this case, I would probably use a wrapper and go over one of the two transforms for the wrapper, and the other for the element itself.
HTML:
<div class='wrap'>
<div class='el'></div>
</div>
Matching CSS:
.wrap {
transition: transform .5s cubic-bezier(.39, -.6, 1, -.6);
}
.el {
transition: transform .5s cubic-bezier(.27, .875, .575, .87);
}
.wrap:hover { transform: scale(2,2); }
.wrap:hover .el { transform: translateX(-50px); }
, , translateX left.
transition, animation , .