Question

Which of the following equations has exactly the same solutions as (x−7)(x+9)=0
?(1 point)
Responses

x2−2x−63=0

x squared minus 2 x minus 63 is equal to 0

x2+2x+63=0

x squared plus 2 x plus 63 is equal to 0

x2−2x+63=0

x squared minus 2 x plus 63 is equal to 0

x2+2x−63=0

Answer 1

Expand (x−7)(x+9): x^2 +9x −7x −63 = x^2 +2x −63.

So the equation x^2 +2x −63 = 0 has exactly the same solutions.