a+b=5,a-b=3 হলে ab এর মান কত?
Answers
Answered by
4
a+b=5
a-b=3
Than add both equation
a+b+a-b=5+3
2a = 8
a = 8/2
a = 4
substitute a= 4 in any
equation
a+b = 5
4+ b=5
b=5-4
b=1
ab= 4×1
= 4
a-b=3
Than add both equation
a+b+a-b=5+3
2a = 8
a = 8/2
a = 4
substitute a= 4 in any
equation
a+b = 5
4+ b=5
b=5-4
b=1
ab= 4×1
= 4
Similar questions