Use the quadratic formula to solve the equation x2 - 4x = -7

Let's solve your equation step-by-step.

x2−4x=−7

Step 1: Subtract -7 from both sides.

x2−4x−(−7)=−7−(−7)

x2−4x+7=0

Step 2: Use quadratic formula with a=1, b=-4, c=7.

x=

−b±√b2−4ac

2a

x=

−(−4)±√(−4)2−4(1)(7)

2(1)

x=

4±√−12

2

No real solutions.

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175