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If a = 5 and b = $-$2 then the find the value of:(a $-$ b)2 $-$ (a $+$ b)2
Given: (a $-$ b)2 $-$ (a $+$ b)2
To find: Here we have to find the value of given expression (a $-$ b)2 $-$ (a $+$ b)2 when, a = 5 and b = $-$2.
Solution:
Value of a = 5 and b = $-$2;
Put values of a and b in the equation below;
= (5 $-$ ($-$2))2 $-$ (5 $+$ ($-$2))2
= (5 $+$ 2)2 $-$ (5 $-$ 2)2
= (7)2 $-$ (3)2
= 49 $-$ 9
= 40
So, value of given expression (a $-$ b)2 $-$ (a $+$ b)2 when, a = 5 and b = $-$2 is 40.
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