Question

Which equation has an a-value of 1, a b-value of –3, and a c-value of –5?

0 = –3x – 5 + x2
0 = x – 3 – 5x2
0 = 3x – 5 – x2
0 = –3x + 5 – x2

Answer 1

Write in standard form ax^2 + bx + c = 0. The option 0 = –3x – 5 + x^2 rewrites as x^2 − 3x − 5 = 0, so a = 1, b = −3, c = −5.