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It is the opposite of Expanding The Brackets
9 - 4 = 9 + (-4)
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Yes, a coefficient of an exponent can be negative. Negative coefficients indicate the opposite direction or opposite effect of positive coefficients in mathematical expressions.
These two are both similar because they are both expressions.
Expanding Brackets
the opposite of expanding
They are opposite if a + (-A) = 0
Contracting
factorising
The only opposite of abbreviation is writing out, or expanding the abbreviation.
It is the opposite of Expanding The Brackets
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Expanding fractions
9 - 4 = 9 + (-4)
The opposite of expand is contract (in some uses, to shrink).For expand (increase), the opposite can be reduce or decrease.For expand (widen), the opposite would be to narrow.For expand (inflate) the opposite would be to deflate.
Both have magnitudes of A, so they are equal distances and, by the definition of additive inverses, A + (-A) = 0 and that means that they are opposite. Of course, they need not be opposite distances: they could be opposite times, or opposite amounts of money.