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Factorise x squared + x - 12
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4 votes
Factorise x squared + x - 12

User Joel Spolsky
by
4.0k points

2 Answers

4 votes

Answer:

(x + 4)(x - 3)

Explanation:

Given

x² + x - 12

Consider the factors of the constant term (- 12) which sum to give the coefficient of the x- term (+ 1)

The factors are + 4 and - 3 , since

4 × - 3 = - 12 and 4 - 3 = + 1 , then

x² + x - 12 = (x + 4)(x - 3) ← in factored form

User Dwarring
by
4.5k points
5 votes

Answer:

(x+4)(x-3)

Explanation:

User Ken Palmer
by
4.3k points
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