Roboguru

Jika diketahui , maka nilai  ialah =  ….

Pertanyaan

Jika diketahui begin mathsize 14px style square root of 20 plus square root of x plus square root of 125 equals 10 square root of 5 end style, maka nilai begin mathsize 14px style x space plus space 5 end style ialah =  ….

 

Pembahasan Soal:

begin mathsize 14px style square root of 20 plus square root of x plus square root of 125 equals 10 square root of 5 end style

begin mathsize 14px style square root of 4 open parentheses 5 close parentheses end root plus square root of x plus square root of 25 open parentheses 5 close parentheses end root equals 10 square root of 5 end style 

begin mathsize 14px style 2 square root of 5 plus square root of x plus 5 square root of 5 equals 10 square root of 5 end style 

begin mathsize 14px style square root of x plus 7 square root of 5 equals 10 square root of 5 end style 

begin mathsize 14px style square root of x equals 3 square root of 5 end style 

begin mathsize 14px style x equals 9 open parentheses 5 close parentheses equals 45 end style 

Jadi 

begin mathsize 14px style x plus 5 equals 45 plus 5 equals 50 end style.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 12 April 2021

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