-32 = 2(x2 + 10x)
-32 + = 2(x2 + 10x + 25)
18 = 2(x + 5)2
9 = (x + 5)2
=X+5
x=-2 or x=

¿De dónde has sacado el 25 de repente?

Si la ecuación es la primera, el resultado es:

-32= 4x+20x

-32= 24x

x= -32/24

Si la ecuación es la segunda, sería:

-32= 4x+20x+50

-82=24x

x= -41/12

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1