The binary operation \( \oplus \) is defined by \( x \ast y = xy - y - x \) for all real values \( x \) and \( y \). If \( x \ast 3 = 2 \ast \), find \( x \...
The binary operation \( \oplus \) is defined by \( x \ast y = xy - y - x \) for all real values \( x \) and \( y \). If \( x \ast 3 = 2 \ast \), find \( x \)
Answer Details
x ∗ y = xy - y - x, x ∗ 3 = 3x - 3 - x = 2x - 3 2 ∗ x = 2x - x - 2 = x - 2 ∴ 2x - 3 = x - 2 x = -2 + 3 = 1