If a=7 and b=28, what's ( a + b ) to the power 2

plz help

Add 'a' and 'b' then multiply by its self 35 x 35 = 1225, that's the power of 2,
power of 3 is 35 x 35 x 35...etc..etc..

(7+28)^2
(35)^2
1225

all you need to do is replace the 'a' and 'b' with your values first

(7 + 28)²
= (35)²
=1225

its simply (7+28) raised to the second power which is 1225

1225

(7 + 28)^2
(35)^2
1225


done.