Question

13.Subtract 24ab – 10b – 18a from 30ab + 12b + 14a.

14.Express:(i) 729 as a power of 3. (ii) 128 as a power of 2(iii) 343 as a power of 7. (iv) 256 as a

power 2.15..Write the following numbers in standard form.(i) 0.000000564 (ii) 0.000002 (iii)

21600000​

Answer 1

Answer:

13. 6ab+22b+32a

14. Factorise the no. using the given factors. For eg- (i) 729=3*3*3*3*3*3=6times 3= 3^6

Rest u can do like this..!