Jawaban:
a. ada kesalahan soal?
b. x²+10x+21=0
(x+5)²-4=0
(x+5)² = 4
(x+5) = √4
x+5 =2 atau x+5=-2
x = -3 atau x = -7
semoga membantu
maaf bila keliru
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Jawaban:
a. ada kesalahan soal?
b. x²+10x+21=0
(x+5)²-4=0
(x+5)² = 4
(x+5) = √4
x+5 =2 atau x+5=-2
x = -3 atau x = -7
semoga membantu
maaf bila keliru