Question

Which are the solutions of x2 = –7x – 8?

Answer 1

Add 7x+8 to both sides
x^2+7x+8=0
use quadracit formula
x=$\frac{-b+/- \sqrt{b^2-4ac} }{2a}$
a=1
b=7
c=8


x=$\frac{-7+/- \sqrt{7^2-4(1)(8)} }{2(1)}$
x=$\frac{-7+/- \sqrt{49-32} }{2}$
x=$\frac{-7+/- \sqrt{17} }{2}$
aprox
x=-5.56155 or -1.438

Answer 2

Answer:

the answer is C

Step-by-step explanation: