Разложите выражение на множители:
а) х+6(корень) х+8
б) х-7(корень)х-18
X+6√x +8 = x + 2√x + 4√x + 8 = √x(√x + 2) + 4(√x +2) = (√x + 2) (√x + 4)X - 7√x - 18 = x - 9√x + 2√x - 18 = √x(√x - 9) + 2 (√x - 9) = (√x - 9) (√x +2)
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Answers & Comments
X+6√x +8 = x + 2√x + 4√x + 8 = √x(√x + 2) + 4(√x +2) = (√x + 2) (√x + 4)
X - 7√x - 18 = x - 9√x + 2√x - 18 = √x(√x - 9) + 2 (√x - 9) = (√x - 9) (√x +2)