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Multiply:(5x2 + 7x – 3) by 4x2 |
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Answer» (5x2 + 7x – 3) × 4x2 = 4x2(5x2 + 7x – 3) Multiplication is commutative = 4x2 (5x2 + 4x2 (7x) + 4x2 (-3) = (4 × 5)(x2 × x2) + (4 × 7)(x2 × x) + (4 × -3)(x2) = 20x4 + 28x3 – 12x2 |
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