Can someone show me how 2 simplify (2 √5 +3 √7)² step by step

Question

anonymous · Answer

You'll want to FOIL this out. But first, rewrite it like this:
$$(2\sqrt{5} + 3\sqrt{7})(2\sqrt{5} + 3\sqrt{7})$$Now, you can FOIL this out as you normally would.

anonymous · Answer

Apply (a + b)^2  formula to it

i0iz0gangster · Answer

so it would 2 sqrt 18 sqrt 7?

anonymous · Answer

It would be 103 + 12underroot 35

i0iz0gangster · Answer

do you mind explaining I still cant figure out how you got that answer...

anonymous · Answer

The formula goes a^2 + 2ab + b^2
Hence place the first term as a
Second term as b
Plug the value get the answer. Simple

lncognlto · Answer

2sr5 + 3sr7 ^2
=2sr5(2sr5) + 2sr5(3sr7) + 3sr7(3sr7)
=4(5) + 6sr35 + 9(7)
=83 + 6 sr35

i0iz0gangster · Answer

83+6 sr 35 is the final answer or should I complete it ?

anonymous · Answer

Great u almost got it but u forgot to multiply the middle term by 2

anonymous · Answer

My bad its 83 ur right

anonymous · Answer

The final is 83 +12sr35

i0iz0gangster · Answer

thank you all for the help god bless :)