Question

Solve the system of equations algebraically. Show all of your steps
Y= x^2+2x
Y= 3x+20

Answer 1

make y=y so result

x^2 +2x = 3x +20

x^2 +2x-3x -20 = 0

x^2 -x -20 = 0 so you can factoriz it completly and will get

(x-5)(x+4) = 0

x-5=0
x_1 = 5

x+4=0
x_2 = -4

hope you understand it sure