What are the values of x in the equation x2 – 6x + y = A)x= -2 or x = 8 B)x= -1 or x = -11 C)x= 1 or x = 11 D)x = 2

Question

What are the values of x in the equation x2 – 6x + y =
A)x= -2 or x = 8
B)x= -1 or x = -11
C)x= 1 or x = 11
D)x = 2 or x = -8

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Vodka 3 years 2021-08-19T10:02:29+00:00 2 Answers 8 views 0

Answers ( )

  1. ngockhue
    0
    2021-08-19T10:03:30+00:00
    Reply

    a rule in quadratic equ states that

    if summation of the roots should be -b/a of the equa

    comparing the equ x² – 6x + y=0

    with. ax² + bx +c =0

    we see that in the equ, a= 1, b=-6

    so the sum of the roots is -(-6)/1= +6

    looking the the option the only one that agreed is option A

    -2 + 8= 6

    there fore the values of x are -2 or 8

  2. thachthao
    0
    2021-08-19T10:04:10+00:00
    Reply

    The correct answer is A

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )