Question

13.Subtract: 4a - 7ab +3b +12 from 12a -9 ab +5b
14.Find the product of the pair of monomials.
-4p and Spa
15 Using identities evaluate: 612
16. Find the volume of the cube with side 4 cm.
17.Find the multiplicative inverse of 3 and 5-4
18.1 cm -
Im-
cm3
19 Evaluate: 3-3
20.Express 4 as a power with base 2​

Answer 1

Step-by-step explanation:

13) (4a-7ab+3b+12)-(12a-9ab+5b)

4a-7ab+3b+12-12a-9ab+5b

4a-12a-7ab-9ab+3b+5b+12

- 8a-16ab+8b+12

14) -4p × 5pa

-20p2a

Answer 2

16)

Given details are,

Side of cube = 4 cm

Volume of cube = (side) 3

= 43

= 64 cm