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5. If A = 3.x2 – 7x - 8 and B=x2-5x-4find 2A + B. |
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Answer» Answer: 7x² - 19x -20 Step-by-step explanation: B = x² - 5x - 4 Therefore, 2A + B =2(3x² - 7x -8) + x² - 5x - 4 = 6x² - 14x - 16 + x² - 5x - 4 = 7x² - 19x -20 plz MARK me the brainliest. |
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