Question

Apr 09, 17:18:50 AM

Answer 1

Answer:

Step-by-step explanation:

Step 1: Subtract -2x from both sides.

x2+x−7−−2x=−2x−−2x

x2+3x−7=0

For this equation: a=1, b=3, c=-7

1x2+3x+−7=0

Step 2: Use quadratic formula with a=1, b=3, c=-7.

x= −b±√b2−4ac  /  2a

x= −(3)±√(3)2−4(1)(−7)  /  2(1)

x= −3±√37  /  2

x= −3/2 + 1/2  √37  or  x= −3/2 + −1/2  √37

Answer:

x= −3/2 + 1/2 √37  or  x= −3/2 + −1/2  √37