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jeka57 [31]
3 years ago
6

How does the value of an expression change when it is expanded

Mathematics
1 answer:
arsen [322]3 years ago
6 0

Answer:

The value remains the same.

Step-by-step explanation:

using the expression: (x + 1)^{2},

where x = 2

substitute for x in the expression;

(2 + 1)^{2}

= (3)^{2}

=9          

The value of the expression before expansion = 9

Lets expand the expression:  (x + 1)^{2}

= (x + 1) (x + 1)

= x^{2} + 2x + 1

substitute for x in the expression

= 2^{2} + 2(2) + 1

= 4 + 4 + 1              = 9

The value of the expansion after expansion = 9

The value remains the same before and after expansion.

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Read 2 more answers
Solve for x<br><br> X/6 = 10<br><br> A) X = 4<br> B) X = 10<br> C) X = 16<br> D) X = 60
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hi  

x/6 = 10

In a equation , you can use every math operation you know as long as you do the same thing on both sides.  

Here we have   x/6 = 10  

But what I want is  x .  

Here X is split in 6.  So  I 'm going to multiplicate all by 6 to find the original amount of X  

In bold operation that are often not written but that you must understand to do that kind of exercices.

So  :  x/6 = 10

      (x/6) *6  = 10 *6

        6x/6 =  60

             x = 60

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