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as far as I know
it is a formula which says
(a-b) (a+b) = a2-b2
but I'm not understanding why there is x and y
it is a formula which says
(a-b) (a+b) = a2-b2
but I'm not understanding why there is x and y
Khushiakherajot:
this is a linear equation find the value of x and y
Sol;
Given that (a-b) x + (a + b)y = a2 - 2ab - b2 -------------(1)
(a+b) x+ (a+b)y = a2 + b2 ------------------(2)
Substracting (2) from (1) we get
-2bx = -2ab - -2b2
x = a + b
Subsitute x in equation (2) we get
y = - 2ab / ( a + b).
Given that (a-b) x + (a + b)y = a2 - 2ab - b2 -------------(1)
(a+b) x+ (a+b)y = a2 + b2 ------------------(2)
Substracting (2) from (1) we get
-2bx = -2ab - -2b2
x = a + b
Subsitute x in equation (2) we get
y = - 2ab / ( a + b).
Ok thanks its difficult to understand
wait
Sol;
Given that (a-b) x + (a + b)y = a2 - 2ab b2 -------------(1)
(a+b) x+ (a+b)y = a2 + b2 ------------------(2)
Substracting (2) from (1) we get
-2bx = -2ab - -2b2
x = a + b
Subsitute x in equation (2) we get
y = - 2ab / ( a + b)
Given that (a-b) x + (a + b)y = a2 - 2ab b2 -------------(1)
(a+b) x+ (a+b)y = a2 + b2 ------------------(2)
Substracting (2) from (1) we get
-2bx = -2ab - -2b2
x = a + b
Subsitute x in equation (2) we get
y = - 2ab / ( a + b)
im sorry
it's okay
(a-b)x+(a-b)y=a2-2ab+b2. (a+b)x+(a+b)y=a2+b2. by substracting -2bx=-2ab-2b2. x = a + b. Subsitute x in equation (2) we get
y = - 2ab / ( a + b).
y = - 2ab / ( a + b).
ok bye gn
gn
Answered by
1
both x and y will have the same answer
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correct
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