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Zinaida [17]
2 years ago
13

X(x+1)-1=4 --- please help stuck on this question

Mathematics
2 answers:
Sloan [31]2 years ago
8 0

Answer:

x=2

Step-by-step explanation:

use distributive property: x^2+2x-1=4

remove the -1 by adding 1 on both sides: x^2+2x=5

use the guadratic fromula:  ax²+bx+c=0

plug in the equation x^2+2x-5=0

a,b and c are the coefficients to plug into the formula

a=1, b=2, c=-1

Finally, you will find that x=2

Gelneren [198K]2 years ago
4 0

Answer:

21

Step-by-step explanation:

math

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