Question

2.
If a - b = 6 and a^2= 42, find the value of a b​

Answer 1

Answer:

0.49

Step-by-step explanation:

a^2 =42

a= root of 42

then ,a =6.480.......

................. .............................

~a-b =6 ~

~6.48 - b = 6 ~

~ b = 6.48 - 6 ~

~ b = 0.48 ~

Answer 2

Answer:

Step-by-step explanation:

If a-b=6 and a^2+b^2=42 find the value of ab

To find ab

$(a-b)^{2}$ = $a^{2}$ + $b^{2}$-2ab

$6^{2}$=42-2ab

36=42-2ab

42-36-2ab = 0

6-2ab=0

6=2ab

Therefore ab = 6/2 = 3