Saved Bookmarks
| 1. |
7. Check whether a-2a2 +30 -18 is exactly divisible by a-3 or not.8. What must be added to 6y + 4y+-27y3 - 7y2-27y-6 so that the result is exactly divisible by 2y?--9. The area of a rectangle is x + 7x+12. If its breadth is (x+3), then find its length.(1) (z+ 5)2 =22 |
|
Answer» Answer: 7) we can find remainder by PUTTING a=3 3-2(3)^2+30-18 3-18+30-18 33-36 -3 not divisible 8) 6y+4y-27y^3-7y^2-27y-6/2y 10y/2y-27y^3/2y-7y^2/2y-27y/2y-6/2y 5-27/2y^2-7/2y-27/2-6/2y last term-6/2y MUST be REMOVED therefore 6 must be added to expression 9) x^2+7x+12 factorize it (x+3)(x+4) x+3 is BREADTH therefore x+4 is length 10) z+5=22/2 z+5=11 z=11-5 z=6 |
|