159k views
4 votes
Help me goddammit!!!! Solve the system of equations.

y=x+6
y=x^2 + 8x +16


Enter your answers in the boxes as ordered pairs.

1 Answer

7 votes
it should be -2,4 or -5,1.


since both answers = y then you put them equal to each other and then solved for x.


x+6=x^2 +8x +16
0=x^2 +7x +10
0=(x+2)(x+5)

x=-2 or -5


and for y I input the two separately into one of the equations

y= (-2)+6

y=4


y=(-5)+6

y=1


and then I double checked by imputing my y's and x's into the remaining equation.


(4)=(-2)^2 +8(-2)+16
4=4-16+16
4=4


(1)=(-5)^2 +8(-5)+16
1=25-40+16
1=1

I hope your tests go well with the help of this knowledge.

User Onur Bebin
by
4.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.