Question

Simplifyandwritetheanswerinexponentialform:a

4

×b

4

(a)a

4

×b

4

(b)(ab)

4

(c)a4+b4

(d)none​

Answer 1

soory hhbbbhdrccaxvgbljbggfeswacrcgh

Answer 2

Step-by-step explanation:

Display utility classes that apply to all breakpoints, from xs to xl, have no breakpoint abbreviation in them. This is because those classes are applied from min-width: 0; and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation.

As such, the classes are named using the format:

.d-{value} for xs

.d-{breakpoint}-{value} for sm, md, lg, and xl.

Where value is one of:

none

inline

inline-block

block

table

table-cell

table-row

flex

inline-flex

The media queries effect screen widths with the given breakpoint or larger. For example, .d-lg-none sets display: none; on both lg and xl screens.

Examples

d-inline

 

d-inline

<div class="d-inline p-2 bg-primary text-white">d-inline</div> <div class="d-inline p-2 bg-dark text-white">d-inline</div>

d-blockd-block

<span class="d-block p-2 bg-primary text-white">d-block</span> <span class="d-block p-2 bg-dark text-white">d-block</span>

Hiding elements

For faster mobile-friendly development, use responsive display classes for showing and hiding elements by device. Avoid creating entirely different versions of the same site, instead hide element responsively for each screen size.

To hide elements simply use the .d-none class or one of the .d-{sm,md,lg,xl}-none classes for any responsive screen variation.

To show an element only on a given interval of screen sizes you can combine one .d-*-none class with a .d-*-* class, for example .d-none .d-md-block .d-xl-none will hide the element for all screen sizes except on medium and large devices.

Screen SizeClassHidden on all.d-noneHidden only on xs.d-none .d-sm-blockHidden only on sm.d-sm-none .d-md-blockHidden only on md.d-md-none .d-lg-blockHidden only on lg.d-lg-none .d-xl-blockHidden only on xl.d-xl-noneVisible on all.d-blockVisible only on xs.d-block .d-sm-noneVisible only on sm.d-none .d-sm-block .d-md-noneVisible only on md.d-none .d-md-block .d-lg-noneVisible only on lg.d-none .d-lg-block .d-xl-noneVisible only on xl.d-none .d-xl-block

hide on screens wider than lg

<div class="d-lg-none">hide on screens wider than lg</div> <div class="d-none d-lg-block">hide