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#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### MEAP Preparation - Grade 7 Mathematics2.87 Multiplication - III

 Directions: Using the definitions given below, solve the problems given in the questions. A=3x+2y+7z B=3x+2y C=9x+3y+7z D=2x+7y+3z
 Q 1: 2AB+2BC = _____ ?45x2+24y2+51xy+63zx+42zy90x2+48y2+102xy+126zx+84yz-12x-7y-31z-43xy-32zx-52zy Q 2: 2(A+B+C+D) = ___ ?-12x-7y-31z-43xy-32zx-52zy12x2+28y2+21z2+50xy+32zx+61yz34x+28y+34z Q 3: AD+BD = _______ ?90x2+48y2+102xy+126zx+84yz12x2+28y2+21z2+50xy+32zx+61yz45x2+24y2+51xy+63zx+42zy Q 4: 3(B-C) = ______ ?4x-20y-12z-18x-3y-21z-12x-7y-31z-43xy-32zx-52zy Q 5: AB+BC = _______ ?90x2+48y2+102xy+126zx+84yz45x2+24y2+51xy+63zx+42zy-12x-7y-31z-43xy-32zx-52zy Q 6: AB-BC = _______ ?-12x-7y-31z-43xy-32zx-52zy90x2+48y2+102xy+126zx+84yz-9x2+12y2-3xy+21zx+14zy Q 7: 2(AB) = _______ ?4x-20y-12z-12x-7y-31z-43xy-32zx-52zy18x2+8y2+24xy+42zx+28zy Q 8: D(B-C) = ______ ?-9x2+12y2-3xy+21zx+14zy-12x2-7y2-31z2-43xy-32zx-52zy-12x-7y-31z-43xy-32zx-52zy Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!