Algebraic expressions can be expanded - multiplied by one or more terms. They may also be simplified – made shorter and simpler by collecting like terms. Multiply \(-3\) by \(-4\) using the rule ...

NEW YORK - High school students around New York state are getting ready for a rite of passage: Regents exams. The statewide standard exams test knowledge in core subjects, including: In order to ...

This title is available on our Higher Education website. Linear algebra has become the subject to know for people in quantitative disciplines of all kinds. No longer the exclusive domain of ...

This title is available on our Higher Education website. Linear algebra now rivals or surpasses calculus in importance for people working in quantitative fields of all kinds: engineers, scientists, ...

Find out how to substitute simple expressions and formulae. Find pairs of values that satisfy equations with two variables Learn how to find pairs of values that satisfy equations with two variables.

Congress vested responsibility for the administration of the Smithsonian in a Board of Regents, consisting of the Chief Justice of the United States, the Vice President of the United States, three ...

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A radio station in Poland fired its on-air talent and brought in A.I.-generated presenters. An outcry over a purported chat with a Nobel laureate quickly ended that experiment. By Andrew Higgins ...

The NEJM Weekly CME Program offers one AMA PRA Category 1 Credit™ for each successfully completed Weekly CME or Interactive Medical Case activity. A personal subscription to NEJM provides free ...

Federal transit regulators announced new safety rules for track workers Tuesday, marking the first time ...

With the acute phase of the Covid-19 pandemic fading even as the coronavirus persists and evolves, a new normal is taking shape around the world. The agency endorsed additional doses for people at ...

Colleges have beefed up safety measures since last spring’s intense protests. A call for a national “day of action” on Thursday may test the new rules.