Question

Medals will be given need help with problems, have the answers already just need to work them out.
7.3x^2 + 11x -4
9. 15x^2-55x-20
10. x^2-8x + 16
11. x^2 - 16
12.16^2-121
13. 125a^2 - 121
14. 9z^3 + 18z^2 -7z-14

Answer 1

@surjithayer can you help please with these

Answer 2

7.
3*-4=-12
11=12-1
12*-1=-12
9.
15*-20=-300
55=60-5
60*-5=-300
10.
1*16=16
8=4+4
4*4=16
11.12.13.
(mx)^2-(ny)^2=(mx+ny)(mx-ny)
14.
9z^3+18z^2-7z-14=9z^2(z+2)-7(z+2)
=(z+2)(9z^2-7)
=(z+2){(3z)^2-(sqrt7)^2}
=(z+2)(3z+sqrt7)(3z-sqrt7)

Answer 3

omggggg thank you so much your the best dude, so when you fine the factor do you multiply ?

Answer 4

this is the proper way to find the factos.

Answer 5

okay thank you i understand you were a biggg help!!!

Answer 6

yw

Answer 7

@surjithayer whats 11 12 13 ?

Answer 8

nervermind i can do it myself lolll

Answer 9

11,12,13 are questions. They are solved like i have solved in last part of 14.