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# Solve X2 – 4x – 12 =0; When X ∈ I - ICSE Class 10 - Mathematics

ConceptSolutions of Quadratic Equations by Factorization

#### Question

Solve x2 – 4x – 12 =0; when x ∈ I

#### Solution

x2 – 4x – 12 =0

=> x^2 - 6x + 2x - 12 = 0

=> x(x - 6) + 2(x - 6) = 0

=> (x - 6)(x + 2) = 0

then x = 6 and x = -2

Since x in I then x = 6 and -2

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#### APPEARS IN

Solution Solve X2 – 4x – 12 =0; When X ∈ I Concept: Solutions of Quadratic Equations by Factorization.
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