Solve the quadratic by factoring. x² + 4x +1=6
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Hi there! :)

x² + 4x + 1 = 6

Begin factoring by moving all terms to the left-hand side of the equation:

x² + 4x + 1 - 6 = 0

x² + 4x - 5 = 0

Factor by finding terms that SUM up to 4x and MULTIPLY into -5. We get:

(x + 5)(x - 1) = 0

Use the Zero-Product property to solve the quadratic equation:

x + 5 = 0

x = - 5

x - 1 = 0

x = 1

Therefore, the solutions are x = -5, 1.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

step-by-step explanation: