Question

8. From Sum of x2 +x+1 and x2-x +1, Subtract -x2-x+1.
9. Solve the equations

a).10x=40
b).9y=-135
12. Out of 32 metre long cloth , 24 metre was used for making eight frocks. Find the ratio of -
a).Total cloth and cloth used.

b).Remaining cloth and cloth used.​

Answer 1

8. first sum is x²+x+1+x²-x+1=2x²+2

subtract -x²-x+1

2x²+2+x²+x-1=3x²+x+1

9.10x=40.

x=40/10

x=4

9y=-135

y=-135/9=-15

10.here totally cloth is 32m

used is 24m

now total cloth:cloth used=32:24=4:3

remaining cloth:cloth used=8:24=1:3