Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

Identify the solutions to the equation 2x2 + 5x = 3 when you solve by factoring.?

Identify the solutions to the equation 2x2 + 5x = 3 when you solve by factoring.

1. 1/2, –3

2. –1/2, 3

3. 2/3, –3

4 .–2/3, 3

4 Answers

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  • 1 decade ago
    Best Answer

    The answer is #1

    2x^2 +5x = 3

    first you need to get the equation to = 0

    so subtract 3 from both sides

    2x^2 +5x -3 = 0

    Factor

    (2x - 1) (x -3)

    Now solve for x

    2x -1 = 0

    add 1 to each side

    2x = 1

    divide both sides by 2

    x = 1/2

    x+3 = 0

    subtract 3 from both sides

    x = 3

  • 4 years ago

    2x² + 5x = 3 2x² + 5x - 3 = 0 (2x - 1)(x + 3) = 0 x = 1/2, -3 P.S. When you used the quadratic formula, was c = -3?

  • 1 decade ago

    2x^2+5x-3=0

    (2x-1)(x+3)=0

    so x=1/2 or x=-3

    answer (1)

  • 1 decade ago

    2x^2+6x-x-3=(2x-1)(x+3)=0 x=1/2 x=-3 answer1

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