Roboguru

begin mathsize 14px style square root of 54 plus 14 square root of 5 end root plus square root of 12 minus 2 square root of 35 end root plus square root of 32 minus 10 square root of 7 end root equals... end style

  1. begin mathsize 14px style 10 end style

  2. begin mathsize 14px style 11 end style

  3. begin mathsize 14px style 12 end style

  4. begin mathsize 14px style 5 square root of 6 end style

  5. begin mathsize 14px style 6 square root of 6 end style

Jawaban:

Bentuk umum :begin mathsize 14px style square root of a plus b plus-or-minus 2 square root of a times b end root end root equals square root of a plus-or-minus square root of b comma space a greater than b end style

Dengan menggunakan bentuk umum di atas, maka

begin mathsize 14px style square root of 54 plus 14 square root of 5 end root plus square root of 12 minus 2 square root of 35 end root plus square root of 32 minus 10 square root of 7 end root equals square root of 54 plus 2 times 7 square root of 5 end root plus square root of 12 minus 2 square root of 35 end root plus square root of 32 minus 2 times 5 square root of 7 end root equals square root of 54 plus 2 square root of 49 times 5 end root end root plus square root of 12 minus 2 square root of 35 end root plus square root of 32 minus 2 square root of 25 times 7 end root end root equals square root of 49 plus 5 plus 2 square root of 49 times 5 end root end root plus square root of 7 plus 5 minus 2 square root of 7 times 5 end root end root plus square root of 25 plus 7 minus 2 square root of 25 times 7 end root end root equals square root of 49 plus square root of 5 plus square root of 7 minus square root of 5 plus square root of 25 minus square root of 7 equals 7 plus 5 equals 12 end style

Jadi, jawaban yang tepat adalah C.

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