Pertanyaan

[SBMPTN 2015] Jika a dan b adalah bilangan real positif, maka

[SBMPTN 2015]

Jika a dan b adalah bilangan real positif, maka $fraction numerator open parentheses square root of 2 straight a end root plus square root of straight b close parentheses squared minus square root of straight b open parentheses 2 square root of 2 straight a end root plus square root of straight b close parentheses over denominator negative 2 straight a end fraction equals...$

-2
-1
0
1
2

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Klaim

A. Acfreelance

Master Teacher

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Pembahasan

$table attributes columnalign right center left columnspacing 0px end attributes row blank equals cell fraction numerator open parentheses square root of 2 a end root plus square root of b close parentheses squared minus square root of b open parentheses 2 square root of 2 a end root plus square root of b close parentheses over denominator negative 2 a end fraction end cell row blank equals cell fraction numerator 2 a plus 2 square root of 2 a b end root plus b minus 2 square root of 2 a b end root minus b over denominator negative 2 a end fraction end cell row blank equals cell fraction numerator 2 a over denominator negative 2 a end fraction end cell row blank equals cell negative 1 end cell end table$