Question

Which of the following is a solution of x^2-7x=5

Answer 1

Answer:

x=

7

2

+

1

2

√69 or x=

7

2

+

−1

2

√69

Step-by-step explanation:

Step 1: Subtract 5 from both sides.

x2−7x−5=5−5

x2−7x−5=0

Step 2: Use quadratic formula with a=1, b=-7, c=-5.

x=

−b±√b2−4ac

2a

x=

−(−7)±√(−7)2−4(1)(−5)

2(1)

x=

7±√69

2

x=

7

2

+

1

2

√69 or x=

7

2

+

−1

2

√69