21. simplify (2sqrt5+3sqrt7)^2 show your work. Been confused on it for a while.

4 answers

(2√5+3√7)^2
(2√5)^2 + 2(2√5)(3√7) + (3√7)^2
4*5 + 2*2*3*√35 + 9*7
...
then you do

20+12sqrt35+36
20+63+12sqrt35
83+12sqrt35

also try using FOIL
whats Foil?
The letters FOIL stand for First, Outer, Inner, Last. First means multiply the terms which occur first in each binomial. Then Outer means multiply the outermost terms in the product."

Have a good day!
i dont understand thus
girl me neither lets try our best to survive LMFAO