alondragonzales alondragonzales

21-04-2015
Mathematics

Answered

Whats the answer for this
4b²+20b+25

Answer :

21-04-2015

4b²+20b+25=0

Divide everything by 4

b²+5b+ 6.25=0

use the quadratic formula
x= (-b+ or - √b²-4ac) /2a
x= (-5 + or - √5²-4*1*6.25) /2(1)
x= -5/2 so
in this case, b= -5/2

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