Question

Please could someone help

Answer 1

1. Simplify= xy^3
2. Factorise= (2x+1)(2x-1)
3. 
4. 
5. Estimate= 415.96
6. Highest Common Factor
70= -70,-35,-14,-10,-7,-5,-2,-1,1,2,5,7,10,14,35,70
98= -98,-49,-14,-7,-2,-1,1,2,7,14,49,98
7. Expand: 4-4x+x^2 Simplify: x^2-4x+4
8. 
9. This is actually the easiest you take both the mass and volume and divide them :) which would be 500g÷25cm^3=20g/cm3 
10. 

The ones I didn't answer I am not sure about and don't wanna give you any wrong answers :) Hope I helped though!