Question

If a = 3 and b = 5, what is the value of a 2 + b 2?

Answer 1

\[\Huge (a+b)^2=a^2+b^2+2ab\]

Answer 2

isolate required term and substitute a and b

Answer 3

@DLS Are you kidding us ?
The question is to calculate :
\[\Large a^2+b^2\]
Not :
\[\Large (a+b)^2\]

Answer 4

-_-
can't you write it like this
\[\Huge a^2+b^2=(a+b)^2-2ab\]

Answer 5

64-30

Answer 6

9+25

Answer 7

So we have :
\[\Large a=3~~~b=5\]
then :
\[\Large a^2+b^2=3^2+5^2=9+25=34\]