Question 3 (20points) Solve the quadratic equation using the quadratic -x2+8x=7

Question

Question 3 (20points)
Solve the quadratic equation using the quadratic
-x2+8x=7

in progress 0
Sarah 3 weeks 2021-09-24T15:59:59+00:00 1 Answer 0

Answers ( )

    0
    2021-09-24T16:01:22+00:00

    Answer:

    x = 7 or x = 1

    Step-by-step explanation:

    For this equation: a=-1, b=8, c=-7

    −1×2+8x+−7=0

    Step 1: Use quadratic formula with a=-1, b=8, c=-7.

    x=  ( −b±√b2−4ac
    )/2a

    x=
    (−(8)±√(8)2−4(−1)(−7))/ (2(−1)
    )

    x=  (−8±√36
    )/-2

    x=1 or x=7

Leave an answer

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