8th Class Mathematics Algebraic Expressions - 854

  • question_answer 4)                 (a) Subtract \[4a-7ab+3b+12\] from \[12a-9ab+5b-3\] (b) Subtract \[3xy+5yz-7zx\] from \[5xy-2yz-2zx+10xyz\] (c) Subtract \[4{{p}^{2}}q-3pq+5p{{q}^{2}}-8p+7p-10\] from \[18-3p-11q+5pq+2p{{q}^{2}}+5{{p}^{2}}q\].

    Answer:

                    (a)                

    \[12a-9ab+5b-3\]
    ? \[4a-7ab+4b+12\]
    ? + ? ?
    \[8a-2ab+2b-15\]
                    (b)                
    \[5xy-2yz-2zx+10xyz\]
    ? \[3xy+5yz-7zx\]
    ? ? +
    \[2xy-7yz+5zx+10xyz\]
    (c)                
    \[18-3p-11q+5pq-2p{{q}^{2}}+5{{p}^{2}}q\]
    ? \[-10-8p+7q-3pq+5p{{q}^{2}}+4{{p}^{2}}q\]
    + + ? + ? ?
    \[28+5p-18q+8pq-7p{{q}^{2}}+{{p}^{2}}q\]


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