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5 March, 12:08

Find the solutions to the equation below check all that apply

2x^2+7x+3=0

A. x=2

B. x=7

C. x=-1/2

D. x=3

E. x=4

F. x=-3

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Answers (2)
  1. 5 March, 13:56
    0
    2x^2+7x+3=0: x=-1/2 and x=-3 c and F
  2. 5 March, 16:01
    0
    C. x=-1/2 and F. x=-3

    Step-by-step explanation:

    We can solve this by factoring. We will look for factors of a*c, 2*3, that sum to b, 7. Factors of 6 are:

    1 and 6; these sum to 7.

    2 and 3; these do not sum to 7.

    We will use 1 and 6. We will split bx, 7x, into 1x and 6x:

    2x²+1x+6x+3 = 0

    We will group the first two and the last two terms together:

    (2x²+1x) + (6x+3) = 0

    We will factor out the GCF of each group. The GCF of the first group is 1x:

    1x (2x+1) + (6x+3) = 0

    The GCF of the second group is 3:

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

    The GCF of the two terms remaining is (2x+1); factoring this out,

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

    Using the zero product property,

    2x+1 = 0 or 1x+3 = 0

    To solve the first equation, subtract 1 from each side:

    2x+1-1 = 0-1

    2x = - 1

    Divide both sides by 2:

    2x/2 = - 1/2

    x = - 1/2

    To solve the second equation, subtract 3 from each side:

    1x+3-3 = 0-3

    x = - 3
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