Q 1: 2(AB) = ______ ? 14z 18x3y21z 4x20y12z

Q 2: 4(BD) = ______ ? 12x7y31z43xy32zx52zy 4x20y12z 9x^{2}+12y^{2}3xy+21zx+14zy

Q 3: AD+BD = _______ ? 90x^{2}+48y^{2}+102xy+126zx+84yz 12x^{2}+28y^{2}+21z^{2}+50xy+32zx+61yz 45x^{2}+24y^{2}+51xy+63zx+42zy

Q 4: ABBC = _______ ? 9x^{2}+12y^{2}3xy+21zx+14zy 12x7y31z43xy32zx52zy 90x^{2}+48y^{2}+102xy+126zx+84yz

Q 5: 2AB+2BC = _____ ? 12x7y31z43xy32zx52zy 45x^{2}+24y^{2}+51xy+63zx+42zy 90x^{2}+48y^{2}+102xy+126zx+84yz

Q 6: 2(A+B+C+D) = ___ ? 12x^{2}+28y^{2}+21z^{2}+50xy+32zx+61yz 34x+28y+34z 12x7y31z43xy32zx52zy

Q 7: 2(AB) = _______ ? 12x7y31z43xy32zx52zy 4x20y12z 18x^{2}+8y^{2}+24xy+42zx+28zy

Q 8: D(BC) = ______ ? 12x^{2}7y^{2}31z^{2}43xy32zx52zy 9x^{2}+12y^{2}3xy+21zx+14zy 12x7y31z43xy32zx52zy

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!

