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Multiply:(i) 3ab2, -2a2b3(ii) 4xy, 5y2x, (-x2)(iii) 2m, -5n, -3p |
Answer» (i) (3ab2) × (-2a2b2) = (+) × (-) × (3 × 2) × (a × a2) × (b2 × b3) = -6a3 b5 (ii) (4xy) × (5y2x) × (-x2) = (+) × (+) × (-) × (4 × 5 × 1) × (x × x × x2) × (y × y2) = -20x4y3 (iii) (2m) × (-5n) × (-3p) = (+) × (-) × (-) × (2 × 5 × 3) × m × n × p = + 30mnp = 30 mnp |
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