Nilai X adalah . . . √4x+1+2 = √2x-5

≡ penyelesaian :

√ 4x + 1 + 2 = √ 2x - 5
√ 4x + 3 = √ 2x - 5
4x + 3 = 2x - 5
4x - 2x = - 5 - 3
2x = - 8
x = - 8 / 2
x = - 4

⇒pembuktian :

√ 4x + 1 + 2 = √ 2x - 5
√ 4(-4) + 3 = √ 2(-4) - 5
√ - 16 + 3 = √ - 8 - 5
√ - 13 = √ - 13 ( terbukti )

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