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Mathematics
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Multiply. (2√5 - 1)(3√5 + 4)
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Choices: 26 - 11√5 26 + 5√5 34 - 11√5 34 + 5√5
we have = (2 root 5 -1 ) (3 root 5 - 4) => 2x3 x root 5 x root 5 - 3 root 5 - 8 root 5 + 4 => 2x3x5 - 11 root 5 + 4 => 30+4 - 11 root 5 => 34 - 11 root 5 = ans. (sqrt here means ROOT)
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