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Find each of the following products:(i) 5x2 × 4x3(ii) -3a2 × 4b4(iii) (-5xy) × (-3x2yz)(iv) 1/2xy × 2/3x2yz2 |
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Answer» (i) 5x2 × 4x3 = 20 × x5 = 20x5 (ii) -3a2 × 4b4 = – 3 × a2 × 4 × b4 = -12a2b4 (iii) (-5xy) × (-3x2yz) = 15 × x1+2 × y1+1 × z = 15x3y2z (iv) 1/2xy × 2/3x2yz2 = 1/2 × 2/3 × x × x2 × y × y × z2 = 1/3 × x1+2 × y1+1 × z2 = 1/3x3y2z2 |
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