III. Answer the following: 5 X 2 = 10 1. Find the product of (-7x2 y 3 z), (-13y2 ) and yz. 2. Simplify 3ab (a2 –b 2 ) – 3b (a3 - ab2 + 4ab). 3. Divide -96x5 y 2 z by 80xyz. 4. Simplify 39a (8a + 14b) ÷ 13 (4a +7b). 5. Susheela travelled (15m2 n + 25mn2 + 5mn) km in 5mn hours. Find her speed.
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Answer:
which std question is this
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Step-by-step explanation:
1) 7x²y³z X -13y²
=-91x²y*5z
2) 3a³b-3ab³-3a³b+3ab³+4ab
=4ab
3) -96x*5y²z/80xyz
=48x*4y/40
=24x*4y/20
=12x*4y/10
6x*4y/5 is the answer
4) 39ax8a+14bx39a/52a+91b
simplify u get urs answer
5) 15m²n+25mn²+5mn/5mm
solve this u get urs answer perfectly
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