Question

If a-b=4 and a + b = 6; find :
(i)a +b
(ii) ab​

Answer 1

Answer:

(1) a+b =6 (2) value of ab=13

Answer 2

Answer:

a-b=4

a+b=6

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2a =10

a=10÷2=5

a=5

a-b=4

5-b=4

-b=4-5

-b=4-5

-b=-1

b=1

now,

a+b=5+1=6

ab=5×1=5

a+b=6

ab=5