Weegy: 3x^2 - 15x - 42 = 3(x^2 - 5x - 14) = 3(x - 7)(x + 2)
User: Factor 9b2 - 4.
Weegy: 9b^2 - 4 = (3b)^2 - 2^2 = (3b - 2)(3b + 2)
User: Factor k2 + 13k + 12.
Weegy: k^2 + 13k + 12 = (k + 12)(k + 1)
User: Factor 360t + 10t3 - 120t2.
Weegy: 360t + 10t^3 - 120t^2 = 10t(36 + t^2 - 12t) = 10t(t - 6)^2 = 10t(t - 6)(t - 6)
User: Simplify m - {n + [p - (m + n - p)]}.
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