Y=x^2+3x+4
y-x=7
x^2+3x+4-x=7
x^2+2x+4=7
(factor) x^2+2x-3=0
(x+3)(x-1)=0
X= -3 and X=1
(Plug x in for y)
Y= 1^2+3(1)+4
Y=8
(Check your answer on the second equation)
8-1=7
7=7 (Which is the solution)
Answer:
an expression is the one with out the equal sign.
Step-by-step explanation:
Here you go take a look at the picture it explain what to do and the answer.
Answer:
A .25
Step-by-step explanation:
Answer:
140°
Step-by-step explanation:
arc ER = 2×70° = 140°