Question

If a-b=4and a+b=6; find :ab​

Answer 1

Answer:

ab = 5

Step-by-step explanation:

Given,

a - b = 4 ----- Eq.1     ;      a +  b = 6 ------ Eq.2

Adding these two equations ==>

a - b = 4

a +  b = 6

=> 2a = 10

=> a = 5

Now, putting this value of a in Equation 1...

5 - b = 4

=> b = 1

So, ab = 5 * 1 = 5

Hence,  Answer-   5  .

Answer 2

Answer:

a=5 and b=1 a×b=5

Step-by-step explanation:

a-b=4

a=4+b

put in a+b=6

4+b+b=6

4+2b=6

2b=6-4

b=2/2

b=1

put value of b in a=4+b

a=5