arleth62 arleth62

18-09-2021
Mathematics

contestada

I’m stuck can someone help me please

Im stuck can someone help me please class=

Respuesta :

aniilsah555 aniilsah555

18-09-2021

Step-by-step explanation:

2x-1=13
2x=13+1
2x=14
x=14/2
x=7

Now,

By substituting the value of x

-x²-4x
(-7)²-(4×7)
49-28
21

Answer Link

anasweeney43 anasweeney43

18-09-2021

Answer:

Step-by-step explanation:

2x - 1 = 13

2x = 13 + 1

x = 14/2

x = 7

-7^2 - 4*7

-49 - 28 =. - 77

Answer Link

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