Difference between revisions of "Equal"

(This page talks about two quantities being equal.)
 
Line 5: Line 5:
 
Solution: We can first square our original equation to get <math>y^2 = 16</math>. We can add <math>y</math> to that, as we know that <math>y</math> still equals <math>4</math>. So, <math>y^2 + y = 20</math>. We can also subtract both the left and the right side of the equation by <math>3</math>, giving us <math>y^2 + y - 3 = 17</math>. This proves what we wanted to prove.
 
Solution: We can first square our original equation to get <math>y^2 = 16</math>. We can add <math>y</math> to that, as we know that <math>y</math> still equals <math>4</math>. So, <math>y^2 + y = 20</math>. We can also subtract both the left and the right side of the equation by <math>3</math>, giving us <math>y^2 + y - 3 = 17</math>. This proves what we wanted to prove.
  
 +
equal does not always mean math for instance woman fought for equality
 
{{stub}}
 
{{stub}}

Revision as of 17:34, 13 January 2019

When something is equal to something else, then they have the same value. For instance, if $y = 4$, then $y$ belongs to the set of numbers {4}. You are also able to use this to prove other statements.

Question: Given that $y = 4$, prove that $y^2 + y - 3 = 17$.

Solution: We can first square our original equation to get $y^2 = 16$. We can add $y$ to that, as we know that $y$ still equals $4$. So, $y^2 + y = 20$. We can also subtract both the left and the right side of the equation by $3$, giving us $y^2 + y - 3 = 17$. This proves what we wanted to prove.

equal does not always mean math for instance woman fought for equality This article is a stub. Help us out by expanding it.

Invalid username
Login to AoPS