Question

if a+b=7 and a-b=3 then find the value of a^2+b^2​

Answer 1

Step-by-step explanation:

Hope this will help you

Answer 2

Answer:

29

Step-by-step explanation:

• a+b=7 ----------1)
• a-b=3 ----------2)
• Add eqn 1 and 2
• so, a+b=7 + a-b=3
• +b and -b will get reduced.
• so, we get 2a= 10
• so, a =5

• Put the value of a=5 in eqn 1
• so we get, 5+b=7
• so, b=2

• we have got the values of a and b
• a² + b² = 5² + 2²
• i.e, 25+4
• =29

so, a²+b²=29