PLEASE ANSWER FAST! 20 POINTS+BRAINLIEST!!! 1. factor: k^2+2k-24 2. factor: 4k^2-1 3. factor: 25b^2-30b+9 4. solve b

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PLEASE ANSWER FAST! 20 POINTS+BRAINLIEST!!!
1. factor: k^2+2k-24
2. factor: 4k^2-1
3. factor: 25b^2-30b+9
4. solve by factoring: x^2+11x+28=0
5.find the product. write your answer in standard form: (3a+8)(3a^2-a-7)

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Josephine 2 weeks 2021-11-15T11:52:51+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-11-15T11:54:15+00:00

    Answer:

    1.  k^2+2k-24

    1A. (k – 4) (k + 6)

    2. 4k^2-1

    2A. (2k + 1) (2k – 1)

    3. 25b^2-30b+9

    3A. (5b – 3)^2

    4. x^2+11x+28=0

    4A. x = (-4) OR (-7)

    5. (3a+8)(3a^2-a-7)

    5A. 9a^2 + 21a^2 – 29a – 56

    Step-by-step explanation:

    1.  k^2+2k-24

    Factor using the AC factoring method.

    k^2 = 2k

    2k + 2k – 24

    (k – 4) (k +6)

    2. 4k^2-1

    Use the Difference of Squares Formula: a^2 – b^2 = (a + b)(a – b)

    2k = a

    1 = b

    (2k + 1)(2k – 1)

    3. 25b^2-30b+9

    Use the perfect square rule

    (5b – 3)(5b – 3)

    (5b – 3)^2

    4. x^2+11x+28=0

    Factor, by setting each factor equal to 0

    x^2+11x+28=0

    (x + 4)(x + 7) = 0

    x = (-4) OR (-7)

    5. (3a+8)(3a^2-a-7)

    Simply, multiply each term in the first expression by each term in the second expression, and then simplify.

    (3a+8)(3a^2-a-7)

    9a^2 + 21a^2 – 29a – 56

    0
    2021-11-15T11:54:50+00:00

    Answer:

    1.(k−4)(k+6)

    Explain:Factor k2+2k−24

    k2+2k−24

    =(k−4)(k+6)

    2.(2k+1)(2k−1)

    Factor 4k2−1

    4k2−1

    =(2k+1)(2k−1)

    3.(5b−3)(5b−3)

    Explain: Factor 25b2−30b+9

    25b2−30b+9

    =(5b−3)(5b−3)

    4.x=4 or x=-7

    Let’s solve your equation step-by-step.

    x2+11x+28=0

    Step 1: Factor left side of equation.

    (x+4)(x+7)=0

    Step 2: Set factors equal to 0.

    x+4=0 or x+7=0

    x=−4 or x=−7

    is  5 to help solve or are they questions to?

    Step-by-step explanation:

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