Question

One of the solutions to x2 − 2x − 15 = 0 is x = −3. What is the other solution?
A. x = −5
B. x = −1
C. x = 1
D. x = 5

Answer 1

${x}^{2} - 2x - 15 = 0 \\ \\ {x}^{2} - 5x + 3x - 15 = 0 \\ \\ x(x - 5) + 3(x - 5) \\ \\ (x + 3)(x - 5) \\ \\ x = - 3 \: or \: \: x = 5 \\ \\ so \: option \: (d) - - - x = 5 \\ \\ \\ mark \: me \: as \: brainliest$