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Which quadratic formula do I need to use to solve 2x(x+1.5)=-1

Which quadratic formula do I need to use to solve 2x(x+1.5)=-1-example-1
User Geoff Clayton
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1 Answer

17 votes
17 votes

Answer:

x = - 1, x = - 0.5

Explanation:

Given

2x(x + 1.5) = - 1 ← distribute parenthesis on left side

2x² + 3x = - 1 ( add 1 to both sides )

2x² + 3x + 1 = 0 ← in standard form

(2x + 1)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

2x + 1 = 0 ⇒ 2x = - 1 ⇒ x = - 0.5

User Hkoof
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