which of the following are solutions to the equation below 3x^2+27x+54=0

Question

which of the following are solutions to the equation below 3x^2+27x+54=0

in progress 0
Melody 3 weeks 2021-11-19T09:35:27+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-11-19T09:36:29+00:00

    Answer:

    x=-5

    Step-by-step explanation:

    0
    2021-11-19T09:37:09+00:00

    Answer:x=6

    Step-by-step explanation:Step-1 : Multiply the coefficient of the first term by the constant 1 • 18 = 18

    Step-2 : Find two factors of 18 whose sum equals the coefficient of the middle term, which is -9 .

    -18 + -1 = -19

    -9 + -2 = -11

    -6 + -3 = -9 That’s it

    Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -6 and -3

    x2 – 6x – 3x – 18

    Step-4 : Add up the first 2 terms, pulling out like factors :

    x • (x-6)

    Add up the last 2 terms, pulling out common factors :

    3 • (x-6)

    Step-5 : Add up the four terms of step 4 :

    (x-3) • (x-6)

    Which is the desired factorization

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )