Solve the expressions on the left when x=5 3x-10 x^2-15 5x-21 x+10-8​

Question

Solve the expressions on the left when x=5
3x-10
x^2-15
5x-21
x+10-8​

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Eirian 5 months 2021-08-31T06:24:38+00:00 2 Answers 0 views 0

Answers ( )

  1. kimcuc
    0
    2021-08-31T06:25:54+00:00
    Reply

    3x-10:
    3(5)-10 = 15-10= 5
    The answer is 5

    X^2 -15:
    (5)^2 -15 = 25-15 = 10
    The answer is 10

    5x-21:
    5(5)-21=25-21=4
    The answer is 4

    x+10-8:
    (5)+10-8=15-8=7
    The answer is 7

  2. Nem
    0
    2021-08-31T06:26:23+00:00
    Reply

    Answer:

    5

    10

    4

    7

    Step-by-step explanation:

    Apply the value of x into the expressions:

    3(5) – 10 = 15 – 10

               = 5

    5² – 15 = 25 – 15

              = 10

    5(5) – 21 = 25 – 21

                 = 4

    5 + 10 – 8 = 15 – 8

                   = 7

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