Question

9. If a - b = 4 and a + b = 6; find :
(i) a² +6²
(ii) ab​

Answer 1

Step-by-step explanation:

add 1 and 2

• 2a= 10
• a=5
• b=1

a^2+b^2=25+1

= 26

and. ab=5

Answer 2

Step-by-step explanation:

a-b=4-(1)

a+b=6-(2)

add (1)and (2)

we get

a=5

then,5-b=4

-b=-1

b=1

so, a^2+6^2=5^2+6^2

=61

ab=5×1=5