Question

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Answer 1

the first step itself is wrong..

Answer 2

well the second step is also wrong even if let's say the first step was correct

Answer 3

anyway...you should solve this by..

\[(2 \sqrt 5 + 3\sqrt 7)^2\]
\[(2\sqrt 5)^2 + 2(2\sqrt 5)(3\sqrt 7) + (3\sqrt 7)^2\]
\[(4)(5) + 12 \sqrt{35} + (9)(7)\]

Answer 4

just go on with that process

Answer 5

step 1: square of a binomial

square the first term that will give you \((2\sqrt 5)^2\)

twice the product of your two terms \(2(2\sqrt 5)(3 \sqrt 7)\)

square the last term \((3\sqrt 7)^2\)

step 2: simplify

\((2 \sqrt 5)^2 = (2^2)(\sqrt 5^2) = 4 \times 5\)
\[2(2 \sqrt 5)(3\sqrt 7) = (2)(2)(3)(\sqrt{(5)(7)} = 12 sqrt{35}\]
\[((3\sqrt 7)^2 = (3^2)(\sqrt 7^2) = 9 \times 7\]

Answer 6

yeah that's the final answer.....but the solution is so screwed up lol =)) there are no properties like that

Answer 7

wolfralpha didnt show the steps to it either

Answer 8

well continuing from my solution that's \[20 + 12 \sqrt{35} + 63\] \[83 + 12 \sqrt{35} \] that's how it's supposed to be solved

Answer 9

you're welcome ^_^