Question

If A = x² - 2x +1, B = 3x² - 8x + y and C = 2x² + 3x - 2,find A-B-C​

Answer 1

Answer:

$a \: = x {}^{2} - 2x + 1 \\ = x {}^{2} - x - x + 1 \\ = x(x - 1) - 1(x - 1) \\ = x - 1 = 0 \: \: \: x - 1 = 0 \\ x = 1 \: \: x = 1$