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Express each of the following products as a monomials and verify the result in each case for x=1:(i) (3x) × (4x) × (-5x)(ii) (4x2) × (-3x) × (4/5x3)(iii) (5x4) × (x2)3 × (2x)2 |
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Answer» (i) (3x) × (4x) × (-5x) = -60 × x1+1+1 = -60x3 (ii) (4x2) × (-3x) × (4/5x3) = -48/5 × x2+1+3 = -485x6 (iii) (5x4) × (x2)3 × (2x)2 = 5 × 4 × x4 × x6 × x2 = 20 × x4+6+2 = 20x12 |
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