QuestionAugust 27, 2025

27 Factor the expression completely. (x-1)^2+5(x-1)-6

27 Factor the expression completely. (x-1)^2+5(x-1)-6
27 Factor the expression completely.
(x-1)^2+5(x-1)-6

Solution
4.6(311 votes)

Answer

(x + 5)(x - 2) Explanation 1. Substitute y = x - 1 Let y = x - 1. The expression becomes y^2 + 5y - 6. 2. Factor the quadratic expression Factor y^2 + 5y - 6 using the formula for factoring quadratics: (y + a)(y + b) where a \cdot b = -6 and a + b = 5. Choose a = 6 and b = -1. 3. Substitute back x - 1 for y Replace y with x - 1: (x - 1 + 6)(x - 1 - 1).

Explanation

1. Substitute $y = x - 1$<br /> Let $y = x - 1$. The expression becomes $y^2 + 5y - 6$.<br />2. Factor the quadratic expression<br /> Factor $y^2 + 5y - 6$ using the formula for factoring quadratics: $(y + a)(y + b)$ where $a \cdot b = -6$ and $a + b = 5$. Choose $a = 6$ and $b = -1$.<br />3. Substitute back $x - 1$ for $y$<br /> Replace $y$ with $x - 1$: $(x - 1 + 6)(x - 1 - 1)$.
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