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(b) (2x – y + 4)(2x - y - 3) |
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Answer» Answer: 4x² + y² - 4xy + 2x - y - 12 Step-by-step explanation: (2x - y + 4) (2x - y - 3) = 2x (2x - y - 3) - y (2x - y - 3) + 4 (2x - y - 3) = 4x² - 2XY - 6x - 2xy + y² + 3y + 8x - 4Y - 12 = 4x² + y² - 2xy - 2xy - 6x + 8x + 3y - 4y - 12 = 4x² + y² - 4xy + 2x - y - 12 |
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