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
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
16)
Given details are,
Side of cube = 4 cm
Volume of cube = (side) 3
= 43
= 64 cm